Publications

 
Journal papers

(submitted)




Disorder effects in the electric-field-induced octahedral dynamics of BaTiO3/CaTiO3 superlattices

M. R. Cosgriff, P. Chen, N. P. Corey, J. Y. Jo, A. Mehta, H. Tajiri, H. N. Lee, X. Wu, and P. G. Evans (submitted)


Amplitude contrast high-resolution transmission electron microscopy of a ferroelectric superlattice film

J. Wen, D. A. Miller, N. J. Zaluzec, J. M. Hiller, H. N. Lee, and X. Wu (submitted)



2014

Dimensionality control of d-orbital occupation in oxide superlattices 

W. Jeong, W. S. Choi, S. Okamoto, J.–Y. Kim, K. W. Kim, S. J. Moon, D.-Y. Cho, H. N. Lee, and T. W. Noh, Sci. Rep. 4, 6124 (2014).


Oxygen diffusion pathways in brownmillerite SrCoO2.5: Influence of structure and chemical potential

C. Mitra, T. Meyer, H. N. Lee, and F. Reboredo, J. Chem. Phys. 141, 084710 (2014).


Thermopower enhancement by fractional layer control in 2D oxide superlattices

W. S. Choi, H. Ohta, and H.  N. Lee, Adv. Mater. doi: 10.1002/adma.201401676.

Transparent conducting oxides: A delta-doped superlattice approach

V. R. Cooper, S. S. A. Seo, S. Lee, J. S. Kim, W S. Choi, S. Okamoto, and H. N. Lee, Sci. Rep. 4, 6021 (2014)


Active control of magnetoresistance of organic spin valves using ferroelectricity

D. Sun, M. Feng, X. Xu, L. Jiang, H. Guo, Y. Wang, W. Yang, L. Yn, P. C. Snijders, T. Z. Ward, Z. Gai, X.-G. Zhang, H. N. Lee, and J. Shen, Nature Comm. 5, 4396 (2014).

 Nanoscale spin‑state ordering in LaCoO3 epitaxial thin films

J.-H. Kwon, W. S. Choi, Y.-K. Kwon, R. Jung, J.-M. Zuo, H. N. Lee, and M. Kim, Chem. Mater. DOI: 10.1021/cm5003115 (2014).


Octahedral rotations in strained LaAlO3/SrTiO3 (001) heterostructures

T. T. Fister, H. Zhou, Z. Luo, S. S. A. Seo, S. O. Hruszkewycz, D. L. Proffit, J. A. Eastman, P. H. Fuoss, P. M. Baldo, H. N. Lee, and D. D. Fong, APL Mater. 2, 021102 (2014).


Ground state and spin-wave dynamics in brownmillerite SrCoO2.5: A combined hybrid functional and LSDA+U study

C. Mitra, R. S. Fishman, H. N. Lee, S. Okamoto, and F. A. Reboredo, J. Phys. Condens. Matter 26, 36004 (2014).


2013

Tunneling electroresistance induced by interfacial phase transitions in ultrathin oxide heterostructures

L. Jiang, W. S. Choi, H. Jeen, S. Dong, Y. S. Kim, S. V. Kalinin, E. Dagotto, T. Egami, and  H. N. Lee, Nano Lett. 13, 5837 (2003).

Orienting oxygen vacancies for fast catalytic reaction

H. Jeen, Z. Bi, W. S. Choi, M. F. Chisholm, C. A. Bridges, M. P. Paranthaman, and H. N. Lee, Adv. Mater. 61, 6459 (2013). [DOI: 10.1002/adma.201302919] 


Direct observation of asymmetric domain wall motion in a ferroelectric capacitor Author Copy.pdf

J. K. Lee, G.-Y.Shin, K. Song, W. S. Choi, Y. A. Shin, S. Y. Park, J. Britson, Y. Cao, L.-Q. Chen, H. N. Lee, and S. H. Oh, Acta Materialia 61, 6765 (2013). 

Real-time optical probing of topotactic phase reversal in SrCoOx epitaxial thin films

W. S. Choi, H. Jeen, J. H. Lee, S. S. A. Seo, V. R. Cooper, K. M. Rabe, and H. N. Lee, Phys. Rev. Lett. 111, 097401 (2013).


Reversible redox reactions in an epitaxially stabilized SrCoOx oxygen sponge

H. Jeen, W. S. Choi, M. D. Biegalski, C. M. Folkman, I. C. Tung, D. D. Fong. J. W. Freeland, D. Shin, H. Ohta, M. F. Chisholm, and H. N. Lee, Nature Mater. 12, 1057 (2013).

Room-temperature multiferroic hexagonal LuFeO3 films 


W. Wang, J. Zhao, W. Wang, Z. Gai, N. Balke, M. Chi, H. N. Lee, W. Tian, L. Zhu, X. Cheng, D. J. Keavney, J. Yi, T. Z. Ward, P. C. Snijders, W. Wu, H. M. Christen, J. Shen, and X. Xu, Phys. Rev. Lett. 110, 237601 (2013).

Topotactic phase transformation of the brownmillerite SrCoO2.5 to the perovskite SrCoO3-, 

H. Jeen, W. S. Choi, J. W. Freeland, H. Ohta, C. U. Jung, and H. N. Lee, Adv. Mater. 25, 3651 (2013).


Oxygen vacancy-induced orbital reconstruction of Ti ions at the interface of LaAlO3/SrTiO3 heterostructures: A resonant soft x-ray scattering study


J. Park, B.-G. Cho, K. D. Kim, J. Koo, H. Jang, K.-T. Ko, J.-H. Park, K.-B. Lee, J.-Y. Kim, D. R. Lee, C. A. Burns, S. S. A. Seo, and H. N. Lee,  Phys. Rev. Lett. 110, 017401 (2013).


2012

Atomic layer engineering of perovskite oxides for chemically sharp heterointerfaces


 W. S. Choi, C. M. Rouleau, S. S. A. Seo, Z. Luo, H. Zhou, T. T. Fister, J. A. Eastman, P. H. Fuoss, D. D. Fong,  J. Z. Tischler, G. Eres, and H. N. Lee, Adv. Mater. 24, 6423 (2012).


High rectification and photovoltaic effect in oxide nano-junctions


T. Choi, L. Jiang, S. Lee, T. Egami, and H. N. Lee, New J. Phys. 14, 093056 (2012).


  Fractionally delta-doped oxide superlattices for higher carrier mobilities  


S. Choi, S. Lee, V. Cooper, and H. N. Lee, Nano Lett. 19, 4590 (2012).

  Strain-induced spin states in atomically ordered cobaltites

W. S. Choi, J.-H. Kwon, H. Jeen, J. E. Hamann-Borrero, A. Radi, S. Macke, R. Sutarto, F. He, G. A. Sawatzky, V. Hinkov, M. Kim, and  H. N. Lee, Nano Lett. 19, 4966 (2012).


Strongly coupled phase transition in ferroelectric/correlated electron oxide heterostructures 


L. Jiang, W. S. Choi, H. Jeen, T. Egami, and H. N. Lee, Appl. Phys. Lett.  101, 042902 (2012).


Band gap tuning in ferroelectric Bi4Ti3O12 by alloying with LaTMO3 (TM = Ti, V, Cr, Mn, Co, Ni, and Al) 

S. Choi and H. N. Lee , Appl. Phys. Lett. 100, 132903 (2012).


   Wide Band Gap Tunability in Complex Transition Metal Oxides by Site-Specific Substitution 

S. Choi, M. F. Chisholm, D. J. Singh, T. Choi, G. E. Jellison, and H. N. Lee, Nature Comm. 3, 689 (2012).


  Multilevel data storage memory using deterministic polarization control


Lee, S. M. Yang, T. H. Kim, B. C. Jeon, Y. S. Kim, J.-G. Yoon, H. N. Lee, S. H. Baek, C. B. Eom, and T. W. Noh, Adv. Mater. 24, 402 (2012).
 See also News and Views by Garcia and Bibes : Inside story of ferroelectric memories, Nature 483, 279 (2012).


Domain- and symmetry-transition origins of reduced nonosecond piezoelectricity in ferroelectric/dielectric superlattices


P. Chen, J. Y. Jo, H. N. Lee, E. M. Dufresne, S. M. Nakhmanson, and P. G. Evans, New. J. Phys. 14, 013034 (2012).


2011

Nanocone tip-film solar cells with efficient charge transport

S. H. Lee, X.-G. Zhang, C. M. Parish, H. N. Lee, D. B. Smith, and J. Xu, Adv. Mater. 23, 4381 (2011).


Direct observation of fatigue in epitaxially grown Pb(Zr,Ti)O3 thin films using second harmonic piezoresponse force microscopy


N. M. Murari, S. Hong, H. N. Lee, and R. S. Katiyar, Appl. Phys. Lett. 99, 052904 (2011).


Far-Infrared and dc-magnetotransport of CaMnO3-CaRuO3 superlattices

P. Yordanov, A. V. Boris, J. W. Freeland, J. Chakhalian, H. N. Lee, and B. Keimer, Phys. Rev. B 84, 045108 (2011).


Charge states and magnetic ordering in LaMnO3/SrTiO3  superlattices


W. S. Choi, D. W. Jeong, S. S. A. Seo, Y. S. Lee, T. H. Kim, S. Y. Jang, H. N. Lee, and K. Myung-Whun, Phys. Rev. B 83, 195113 (2011).


Scaling behavior of amplitude-dependent ferroelectric hysteresis loops in an epitaxial PbZr0.2Ti0.8O3 thin film


S. M. Yang, S. Y. Jang, T. H. Kim, H. H. Kim, H. N. Lee, J.-G. Yoon, J. Kor. Phys. Soc. 58, 599 (2011).

  High-resolution field effect sensing of ferroelectric charges


H. Ko, K. Ryu, H. Park, C. Park, D. Heon, Y. K. Kim, J. Jung, D.-K. Min, Y. Kim, H. N. Lee, Y. Park, H. Shin, and S. Hong, Nano Lett. 11, 1428 (2011). 


LaMnO3 thin films grown by using pulsed laser deposition and their simple recovery to a stoichiometric phase by annealing


W. S. Choi, D. W. Jeong, S Y. Jang, Z. Marton, S. S. A. Seo, H. N. Lee, and Y. S. Lee, J. Kor. Phys. soc. 58, 569 (2011).


2010

Nonlinear Hall effect and multichannel conduction in LaTiO3/SrTiO3 superlattices


J. S. Kim, S. S. A. Seo, M. F. Chisholm, R. K. Kremer, H.-U. Habermeier, B. Keimer, and H. N. Lee, Phys. Rev. B, 82, 201407(R)  (2010). arXiv:1004.0660v1


Atomic-scale compensation phenomena at polar interfaces


M. F. Chisholm, W. Luo, M. P. Oxley, S. Pantelides, and H. N. Lee, Phys. Rev. Lett. 105, 197602 (2010), arXiv:1010.5517v1


Optical properties of ferroelectric Bi4Ti3O12


D. J. Singh, S. S. A. Seo, and H. N. Lee, Phys. Rev. B 82, 180103(R) (2010).


Component-specific electromechanical response in a ferroelectric/dielectric superlattice

J. Y. Jo, R. J. Sichel, E. M. Dufresne, H. N. Lee, S. M. Nakhmanson, and P. G. Evans, Phys. Rev. B 82, 174116 (2010).

Structural response of BaTiO3/CaTiO3 superlattice to applied electric fields

J. Y. Jo, R. J. Sichel, H. N. Lee, E. M. Dufresne, and P. G. Evans, Mater. Res. Soc. Symp. Proc. 1199, 1199-F01-06 (2010)


Growth control of stoichiometry in LaMnO3 epitaxial thin films by pulsed laser deposition 


Z. Marton, S. S. A. Seo, T. Egami, H. N. Lee, J. Cryst. Growth 312, 2923 (2010).


Local electronic and magnetic studies of an artificial La2CrFeO6 double perovskite


B. Gray, H. N. Lee, J. Liu, J. Chakhalian, and J. W. Freeland, Appl. Phys. Lett. 97, 013105 (2010).


Piezoelectricity in the Dielectric Component of Nanoscale Dielectric-Ferroelectric Superlattices


J. Y. Jo, R. J. Sichel, H. N. Lee, S. M. Nakhmanson, E. M. Dufresne, and P. G. Evans, Phys. Rev. Lett. 104, 207601 (2010).


Charge transport and magnetization profile at the interface between the correlated metal CaRuO3 and the antiferromagnetic insulator CaMnO3


J. W. Freeland, J. Chakhalian, A. V. Boris, J.-M.. Tonnerre, J. J. Kavich, P. Yordanov, S. Grenier, P. Popovich, H. N. Lee, and B. Keimer, Phys. Rev. B 81, 094414 (2010). arXiv:0903.4663v1


2009

Multiple conducting carriers generated in LaAlO3/SrTiO3 heterostructures


S. S. A. Seo, Z. Marton, W. S. Choi, G. W. J. Hassink, D. H. A. Blank, H. Y. Hwang, T. W. Noh, T. Egami, and H. N. Lee, Appl. Phys. Lett. 95, 082107 (2009). arXiv:0908.1358


Quantitative analysis of nucleation and growth of ferroelectric domain in epitaxial Pb(Zr,Ti)O3 thin films


S. M. Yang, J. W. Heo, H. N. Lee, T. K. Song, and J.-G. Yoon, J. Kor. Phys. Soc. 55, 820 (2009).


Strain-coupled ferroelectric polarization in  BaTiO3-CaTiO3 superlattices


S. S. A. Seo and H. N. Lee, Appl. Phys. Lett. 94, 232904 (2009). arXiv:0904.3294v1


Effects of oxygen-reducing atmosphere annealing on LaMnO3 epitaxial thin films

W. S. Choi, Z. Marton, S. Y. Jang, S. J. Moon, B. C. Jeon, J. H. Shin, S. S. A. Seo, T. W. Noh, K. Myung-Whun, H. N. Lee, and Y. S. Lee, J. Phys. D: Appl. Phys. 42 165401 (2009).


Stability of the unswitched ferroelectric polarization state of ultrathin epitaxial Pb(Zr,Ti)O3 in large electric fields


A. Grigoriev, R. J. Sichel, J. Y. Jo, S. Choudhury, L.-Q. Chen, D. Morgan, H. N. Lee, E. C. Landahl, B. W. Adams, E. M. Dufresne, and P. G. Evans, Phys. Rev. B 80, 014110 (2009).


Ferroelectric phase transitions in three-component short-period superlattices studied by ultraviolet Raman spectroscopy


D. A. Tenne, H. N. Lee, R. S. Katiyar, and X. X. Xi, J. Appl. Phys. 105, 054106 (2009). 

Nonlinear dynamics of domain-wall propagation in epitaxial ferroelectric thin films films


J. Y. Jo, S. M. Yang, T. H. Kim, H. N. Lee, J.-G. Yoon, S. Park, Y. Jo, M. H. Jung, and T. W. Noh, Phys. Rev. Lett. 102, 045701 (2009).

< 2008

Domain wall motion in epitaxial Pb(Zr,Ti)O3 capacitors investigated by modified piezoresponse force microscopy


S. M. Yang, J. Y. Jo, D. J. Kim, H. Sung, T. W. Noh, H. N. Lee, J.-G. Yoon, and T. K. Song, Appl. Phys. Lett. 92, 252901 (2008).

Non-linear piezoelectricity in epitaxial ferroelectrics at high electric fields


Grigoriev, R. Sichel, H. N. Lee, E. C. Landahl, B. Adams, E. M. Dufresne, and P. G. Evans,  Phys. Rev. Lett. 100, 027604 (2008).


Effect of epitaxial strain on ferroelectric polarization in multiferroic BiFeO3 films


D. H. Kim, H. N. Lee, M. D. Biegalski, and H. M. Christen,  Appl. Phys. Lett. 92, 012911 (2008).


Optical Study of the Free Carrier Response of LaTiO3/SrTiO3 Superlattices


S. S. A. Seo, W. S. Choi, H. N. Lee, L. Yu, K. W. Kim, C. Bernhard, and T. W. Noh,  Phys. Rev. Lett. 99, 266801 (2007).


Measurement of the optical functions of highly oriented pyrolytic graphite (HOPG) in the visible


G. E. Jellison, Jr., J. D. Hunn, and H. N. Lee,  Phys. Rev. B 76, 085125 (2007).


Ferroelectricity in artificial bicolor oxide superlattices


S. S. A. Seo, J. H. Lee, H. N. Lee, M. F. Chisholm, W. S. Choi, D. J. Kim, J. Y. Jo, H. Kim, J. Yu, and T. W. Noh, Adv. Mater. 19, 2460 (2007).


Dynamics of step bunching in heteroepitaxial growth on vicinal substrates


M. Yoon, H. N. Lee, W. Hong, H. M. Christen, Z. Zhang, and Z. Suo, Phys. Rev. Lett. 99, 055503 (2007).


Large ferroelectric polarization in antiferromagnetic BiFe0.5Cr0.5O3 epitaxial films


D. H. Kim, H. N. Lee, M. D. Biegalski, and H. M. Christen,  Appl. Phys. Lett. 91, 042906 (2007).


Suppressed dependence of polarization on epitaxial strain in highly polar ferroelectrics


H. N. Lee, S. M. Nakhmanson, M. F. Chisholm, H. M. Christen, K. M. Rabe, and D. Vanderbilt, Phys. Rev. Lett. 98, 217602 (2007).


Antiferroelectricity in multiferroic BiCrO3 epitaxial films


D. H. Kim, H. N. Lee, M. Varela, and H. M. Christen, Appl. Phys. Lett, 89, 162904 (2006).


Influence of miscut Y2O3-stabilized ZrO2 substrates on the azimuthal domain structure and ferroelectric properties of epitaxial La-substituted Bi4Ti3O12 films 


S. K. Lee, D. Hesse, U. Goesele, and H. N. Lee, J. Appl. Phys. 100, 64101 (2006).


Spatial resolution, information limit, and contrast transfer in piezoresponse force microscopy


S. V. Kalinin, S. Jesse, B. J. Rodriguez, J. Shin, A.P. Baddorf, H.N. Lee, A. Borisevich, S. J. Pennycook, Nanotechnology 17, 3400 (2006). 


Quantitative mapping of switching behavior in piezoresponse force microscopy


S. Jesse, H. N. Lee, and S. Kalinin, Rev. Sci. Inst. 77, 73702 (2006).


Effect of strain on structure and charge order transitions in epitaxial Bi0.4Ca0.6MnO3 films on perovskite (001) and (011) substrates


D. H. Kim, H. M. Christen, M. Varela, H. N. Lee, and D. H. Lowndes, Appl. Phys. Lett. 88, 202503 (2006).


Persistent step-flow growth of strained films on vicinal substrates


W. Hong, H. N. Lee, M. Yoon, H. M. Christen, D. H. Lowndes, Z. Suo, and Z. Zhang, Phys. Rev. Lett. 95, 095501 (2005)


Strong polarization enhancement in asymmetric three-component ferroelectric superlattices


H. N. Lee, H. M. Christen, M. F. Chisholm, C. M. Rouleau, and D. H. Lowndes, Nature, 433, 395 (2005).  

 See also News and Views by G. Rijnders and D. H. A. Blank : Materials Science, Build your own superlattices, Nature 433, 369 (2005).

Microstructure of (110)-oriented epitaxial SrRuO3 thin films grown on off-cut single crystal YSZ(100) substrates


X. Zhu, S. K. Lee, H. N. Lee, and D. Hesse, Mater. Sci. Eng. B 118, 60 (2005).


Reducing azimuthal domains in epitaxial ferroelectric lanthanum-substituted bismuth titanate films using miscut yttria-stabilized zirconia substrates


S. K. Lee, D. Hesse, U. Goesele, and H. N. Lee, Appl. Phys. Lett. 86, 142903 (2005).


Surface stability of epitaxial SrRuO3 films


J. Shin, S.V. Kalinin, H.N. Lee, H.M. Christen, R.G. Moore, E.W. Plummer, and A.P. Baddorf,  Surf. Sci. 581, 118 (2005).


Infrared spectroscopy of CaTiO3, SrTiO3, BaTiO3, Ba0.5Sr0.5TiO3 thin films, and (BaTiO3)5/(SrTiO3)5 superlattice grown on SrRuO3/SrTiO3(001) substrates


S. S. A. Seo, H. N. Lee, and T. W. Noh, Thin Solid Films 486, 94 (2005).


Surface stability of epitaxial SrRuO3 thin films in vacuum


J. Shin, S.V. Kalinin, H.N. Lee, H.M. Christen, R.G. Moore, E.W. Plummer, and A.P. Baddorf, J. Mater. Res. 19, 3447 (2004).


Reducing Azimuthal Domains in (100)- or (118)-Oriented Ferroelectric Bi3.25La0.75Ti3O12 Films Using Off-Cut Single Crystal Substrates


S. K. Lee, H. N. Lee, X. H. Zhu, D. Hesse, and U. Goesele, Integrated Ferroelectrics, 68, 179 (2004).


Thermal stability of epitaxial SrRuO3 films as a function of oxygen pressure


H. N. Lee, H. M. Christen, M. F. Chisholm, C. M. Rouleau, and D. H. Lowndes, Appl. Phys. Lett. 84, 4107 (2004).


An improved continuous compositional-spread technique based on pulsed laser deposition and applicable to large substrate areas


H. M. Christen, C. M. Rouleau, I. Ohkubo, H. Y. Zhai, H. N. Lee, S. Sathyamurthy, and D. H. Lowndes, Rev. Sci. Instrum. 74, 4058 (2003).


Growth of uniformly a-axis-oriented ferroelectric lanthanum-substituted bismuth titanate films on silicon substrates


H. N. Lee, D. Hesse, N. Zakharov, S. K. Lee, and U. Gösele, J. Appl. Phys. 93, 5592 (2003).


Comparing crystallography and ferroelectric properties of a-axis oriented Bi3.25La0.75Ti3O12 versus non-c-axis oriented SrBi2Ta2O9 thin films on Si(100)


D. Hesse, H. N. Lee, and N. D. Zakharov, Ferroelectrics, 288, 287-301 (2003).


Ferroelectric Bi3.25La0.75Ti3O12 films of uniform a-axis orientation on silicon substrates


H. N. Lee, D. Hesse, N. Zakharov, and U. Gösele, Science 296, 2006 (2002).  
    
 See also Perspectives by R. Ramesh and D. G. Schlom: Materials Science, Orienting ferroelectric films,     Science 296, 1975 (2002). 

Initial growth stages of epitaxial BaTiO3 thin films on vicinal SrTiO3 substrate surfaces


A. Visinoiu, M. Alexe, H. N. Lee, D. N. Zakharov, A. Pignolet, D. Hesse, and U. Gösele, J. Appl. Phys. 91, 10157 (2002).


Anisotropic ferroelectric properties of epitaxially twinned Bi3.25La0.75Ti3O12 thin films grown with three different orientations


H. N. Lee and D. Hesse, Appl. Phys. Lett. 80, 1040 (2002).


Growth and characterization of non-c-axis-oriented SrBi2Ta2O9 epitaxial thin films on Si(100) 
substrates with SrRuO3 bottom electrodes


H. N. Lee, D. Zakharov, S. Senz, A. Pignolet, and D. Hesse, Integrated Ferroelectrics 39, 1023 (2001).


Ferroelectricity in epitaxial pulsed laser deposited bismuth-layered perovskite thin films of different crystallographic orientations


A. Pignolet, C. Harnagea, H. N. Lee, A. Visinoiu, S. Senz, and D. Hesse, Ferroelectrics 258, 197 (2001).


Epitaxial growth of ferroelectric SrBi2Ta2O9 thin films of mixed (100) and (116) orientation on SrLaGaO4(110)


H. N. Lee, D. N. Zakharov, S. Senz, A. Pignolet, and D. Hesse, Appl. Phys. Lett. 79, 2961 (2001).


Epitaxial growth of non-c-oriented ferroelectric SrBi2Ta2O9 thin films on SrTiO3 substrates


H. N. Lee, S. Senz, A. Pignolet, and D. Hesse, J. Europ. Ceram. Soc. 21, 1565 (2001).


Epitaxial growth of (103)-oriented ferroelectric SrBi2Ta2O9 thin films on Si(100)


H. N. Lee, S. Senz, A. Pignolet, D. Hesse, and U. Gösele, Appl. Phys. Lett. 78, 2922 (2001).


Fabrication and characterization of Pt-oxide electrode for ferroelectric random access memory application


W. S. Kim, J. W. Kim, H. H. Park, and H. N. Lee, Jpn. J. App. Phys. 39, 7097 (2000). 


Growth and characterization of non-c-oriented epitaxial ferroelectric SrBi2Ta2O9 films on buffered Si(100)


H. N. Lee, S. Senz, C. Harnagea, A. Pignolet, D. Hesse, and U. Gösele, Appl. Phys. Lett. 77, 3260 (2000).


Structural and electrical anisotropy of (001)-, (116)-, and (103)-oriented epitaxial SrBi2Ta2O9 thin films on SrTiO3 substrates grown by pulsed laser deposition


H. N. Lee, A. Visinoiu, S. Senz, C. Harnagea, A. Pignolet, D. Hesse, and U. Gösele, J. Appl. Phys. 88, 6658 (2000).


Epitaxial growth of non-c-oriented ferroelectric SrBi2Ta2O9 thin films on Si(100) substrates


H. N. Lee, S. Senz, A. Visinoiu, A. Pignolet, D. Hesse, and U. Gösele, Appl. Phys. A 71, 101 (2000).


Comparison of memory effect between YMnO3 and SrBi2Ta2O9 ferroelectric thin films deposited on Si substrates


H. N. Lee, Y. T. Kim, and S. H. Choh, Appl. Phys. Lett. 76, 1066 (2000).


A Study of Oxygen-Plasma Treatment Effect on Pb(ZrxTi1-x)O3 Ferroelectric Thin Films


H. K. Jang, H. N. Lee, S. K. Lee, C. E. Lee, S. J. Noh, W. I. Lee, and K. S. Lee, Ungyong Mulli (Korean), 12, 213 (1999).


Ferroelectric Switching Properties of Highly c-Axis Oriented YMnO3 Gate Capacitors


H. N. Lee, I. S. Kim, Y. T. Kim, S. H. Choh, W. S. Kim, and H. H. Park, J. Korean Phys. Soc. 35, S1260 (1999).


Luminescence from the Thermal Treated Cerium Oxide on Silicon


W. C. Choi, H. N. Lee, Yong Kim, H. M. Park, and E. K. Kim, Jpn. J. Appl. Phys. 38, 6392 (1999).


Violet/Blue light-emitting cerium silicates


W. C. Choi, H. N. Lee, Yong Kim, and E. K. Kim, Appl. Phys. Lett. 75, 2389 (1999).


Memory window of highly c-axis oriented ferroelectric YMnO3 thin films deposited on Y2O3/Si


H. N. Lee, Y. T. Kim, and Young K. Park, Appl. Phys. Lett. 74, 3887 (1999).


Correlation between morphological and electrical characteristics of Pt/SrBi2Ta2O9/CeO2/Si capacitors


H. N. Lee, S. H. Choh, D. S. Shin, and Y. T. Kim, Ferroelectrics 232, 135 (1999).


Characteristics of Pt/SrBi2Ta2O9/Y2O3/Si Ferroelectric Gate Capacitors


H. N. Lee, Y. T. Kim, and S. H. Choh, J. Korean Phys. Soc. 34, 454 (1999).


Effect of Morphological Changes of Pt/SrBi2Ta2O9 Interface on the Electrical Properties of Ferroelectric Capacitor


D. S. Shin, H. N. Lee, C. W. Lee, Y. T. Kim, and I. H. Choi, Jpn. J. Appl. Phys. Part 1, 37, 5189 (1998).


Electrical Properties of Pt/SrBi2Ta2O9/CeO2/SiO2/Si structure for Non-destructive Readout Memory


D. S. Shin, H. N. Lee, Y. T. Kim, I. H. Choi, and B. H. Kim, Jpn. J. Appl. Phys. Part 1, 37, 4373 (1998).


Characteristics of Metal/Ferroelectric/Insulator/Semiconductor Field Effect Transistors Using a Pt/SrBi2Ta2O9/Y2O3/Si Structure


H. N. Lee, M.-H. Lim, Y. T. Kim, T. S. Kalkur, and S. H. Choh, Jpn. J. Appl. Phys. Part 1, 37 (3B), 1107 
(1998).


Comparison of Electrical Properties of SrBi2Ta2O9/CeO2/Si and SrBi2Ta2O9/Si structures


D. S. Shin, Y. H. Han, I. H. Choi, H. N. Lee, and Y. T. Kim, J. Korean Phys. Soc. 32, S1414 (1998).


Effect of Bottom Electrode on the Structural and Electrical Properties of PbTiO3 Ferroelectric Thin Films


H. N. Lee, Y. T. Kim, and S. H. Choh, Ferroelectrics 197, 97 (1997).

Patents

Asymmetric Ferroelectric Tunneling Element and Applications for Non-Volatile Random Access Memory


Arthur P. Baddorf, Hans M. Christen, Sergei V. Kalinin, Ho Nyung Lee, Vincent Meunier, U.S. Patent (pending).


Ultrahigh Density Ferroelectric Storage and Lithography by High Order Ferroic Switching


Sergei V. Kalinin, Arthur P. Baddorf, Ho Nyung Lee, Junsoo Shin, Alexei L. Gruverman, Edgar Karapetian, and Mark Kachanov, U.S. Patent (No. 7292768 B1), November 6, 2007.


Non-c-axis oriented bismuth- layered perovskite ferroelectric structure epitaxially grown on buffered silicon


H. N. Lee, S. Senz, A. Visinoiu, A. Pignolet, D. Hesse, U. Goesele, U. S. Patent (No. US 6,663,989) December 16, 2003 (CIP to US 6,531,235 B2).


Non-c-axis oriented bismuth- layered perovskite ferroelectric structure epitaxially grown on buffered silicon


H. N. Lee, S. Senz, A. Visinoiu, A. Pignolet, D. Hesse, U. Goesele U. S. Patent (No. US 6,531,235 B2) December 26, 2002.


Fabrication method of ferroelectric gate FETs for non-volatile memories


Y. T. Kim, H. N. Lee, and C. K. Kim,, Korea Patent #10-0279052, October 26, 2000.


Highlights

Perspectives by R. Ramesh and D. G. Schlom: Materials Science, Orienting ferroelectric films, Science 296, 1975 (2002).
Scientia Hallensis (Martin-Luther-Universitaet, Germany), December 2002.
Silicon: An unruly partner, Max Planck Research, p. 24, January 2003.
News and Views by G. Rijnders and D. H. A. Blank : Materials Science, Build your own superlattices, Nature 433, 369 (2005).
Layered film that stacks up, Oak Ridge National Laboratory REVIEW 38, 20 (2005).
New Research Results, Strong polarization enhancement in asymmetric three-component ferroelectric superlattices, Physics and High Technology (Korean Physical Society), 14, 51 (2005).
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