Dr Helen He's Outputs (63)

Tetragonal BiFeO3 on yttria-stabilized zirconia (2015)
Journal Article
Liu, H., Du, Y., Gao, P., Huang, Y., Chen, H., Chen, Y., …Chu, Y. (2015). Tetragonal BiFeO3 on yttria-stabilized zirconia. APL Materials, 3(11), Article 116104. https://doi.org/10.1063/1.4935310

High structural susceptibility of multiferroic BiFeO3 (BFO) makes it a potential replacement of current Pb-based piezoelectrics. In this study, a tetragonal phase is identified based on a combination of x-ray diffraction, scanning transmission electr... Read More about Tetragonal BiFeO3 on yttria-stabilized zirconia.

Origin of metallic behavior in NiCo2O4 ferrimagnet (2015)
Journal Article
Bitla, Y., Chin, Y., Lin, J., Van, C. N., Liu, R., Zhu, Y., …He, Q. (2015). Origin of metallic behavior in NiCo2O4 ferrimagnet. Scientific Reports, 5, Article 15201. https://doi.org/10.1038/srep15201

Predicting and understanding the cation distribution in spinels has been one of the most interesting problems in materials science. The present work investigates the effect of cation redistribution on the structural, electrical, optical and magnetic... Read More about Origin of metallic behavior in NiCo2O4 ferrimagnet.

Tuning the functionalities of a mesocrystal via structural coupling (2015)
Journal Article
Liu, H., Liu, Y., Tsai, C., Liao, S., Chen, Y., Lin, H., …Chu, Y. (2015). Tuning the functionalities of a mesocrystal via structural coupling. Scientific Reports, 5, Article 12073. https://doi.org/10.1038/srep12073

In the past decades, mesocrystal, a kind of nanocrystals with specific crystallographic orientation, has drawn a lot of attention due to its intriguing functionalities. While the research community keeps searching for new mesocrystal systems, it is e... Read More about Tuning the functionalities of a mesocrystal via structural coupling.

Room-temperature antiferromagnetic memory resistor (2014)
Journal Article
Marti, X., Fina, I., Frontera, C., Liu, J., Wadley, P., He, Q., …others. (2014). Room-temperature antiferromagnetic memory resistor. Nature Materials, 13(4), 367-374

Deterministic switching of ferromagnetism at room temperature using an electric field (2014)
Journal Article
Heron, J., Bosse, J., He, Q., Gao, Y., Trassin, M., Ye, L., …others. (2014). Deterministic switching of ferromagnetism at room temperature using an electric field. Nature, 516(7531), 370-373

Magnetic Mesocrystal-Assisted Magnetoresistance in Manganite (2014)
Journal Article
Yang, J., He, Q., Zhu, Y., Lin, J., Liu, H., Hsieh, Y., …others. (2014). Magnetic Mesocrystal-Assisted Magnetoresistance in Manganite. Nano Letters, 14(11), 6073-6079. https://doi.org/10.1021/nl5019172

Multifunctionalities driven by ferroic domains (2014)
Journal Article
Yang, J., Huang, Y., He, Q., & Chu, Y. (2014). Multifunctionalities driven by ferroic domains. Journal of Applied Physics, 116(6), Article 066801. https://doi.org/10.1063/1.4891632

Considerable attention has been paid to ferroic systems in pursuit of advanced applications in past decades. Most recently, the emergence and development of multiferroics, which exhibit the coexistence of different ferroic natures, has offered a new... Read More about Multifunctionalities driven by ferroic domains.

Giant Enhancement of Ferroelectric Retention in BiFeO3 Mixed-Phase Boundary (2014)
Journal Article
Huang, Y., Liu, Y., Lin, Y., Liu, H., He, Q., Li, J., …Chu, Y. (2014). Giant Enhancement of Ferroelectric Retention in BiFeO3 Mixed-Phase Boundary. Advanced Materials, 26(36), 6335-6340. https://doi.org/10.1002/adma.201402442

Domain wall functionality in BiFeO3 (2013)
Journal Article
Seidel, J., Singh-Bhalla, G., He, Q., Yang, S., Chu, Y., & Ramesh, R. (2013). Domain wall functionality in BiFeO3. Phase Transitions, 86(1), 53-66

Atomic-Scale Visualization of Polarization Pinning and Relaxation at Coherent BiFeO3/LaAlO3 Interfaces (2013)
Journal Article
Huang, R., Ding, H., Liang, W., Gao, Y., Tang, X., He, Q., …Chu, Y. (2014). Atomic-Scale Visualization of Polarization Pinning and Relaxation at Coherent BiFeO3/LaAlO3 Interfaces. Advanced Functional Materials, 24(6), 793-799. https://doi.org/10.1002/adfm.201301470

Complex oxide heterointerfaces, which play host to an incredible variety of interface physical phenomena, are of great current interest in introducing new functionalities to systems. Here, coherent super‐tetragonal BiFeO3/LaAlO3 and rhombohedral BiFe... Read More about Atomic-Scale Visualization of Polarization Pinning and Relaxation at Coherent BiFeO3/LaAlO3 Interfaces.

Local Conduction at the BiFeO3-CoFe2O4 Tubular Oxide Interface (2012)
Journal Article
Hsieh, Y., Liou, J., Huang, B., Liang, C., He, Q., Zhan, Q., …Chu, Y. (2012). Local Conduction at the BiFeO3-CoFe2O4 Tubular Oxide Interface. Advanced Materials, 24(33), 4564-4568

Nanoscale phase boundaries: a new twist to novel functionalities (2012)
Journal Article
Zhang, J., Zeches, R., He, Q., Chu, Y., & Ramesh, R. (2012). Nanoscale phase boundaries: a new twist to novel functionalities. Nanoscale, 4(20), 6196-6204

Nanoscale characterization of emergent phenomena in multiferroics (2012)
Journal Article
He, Q., Arenholz, E., Scholl, A., Chu, Y., & Ramesh, R. (2012). Nanoscale characterization of emergent phenomena in multiferroics. Current Opinion in Solid State and Materials Science, 16(5), 216-226

Evidence of sharp and diffuse domain walls in BiFeO 3 by means of unit-cell-wise strain and polarization maps obtained with high resolution scanning transmission electron microscopy (2012)
Journal Article
Lubk, A., Rossell, M., Seidel, J., He, Q., Yang, S., Chu, Y., …Snoeck, E. (2012). Evidence of sharp and diffuse domain walls in BiFeO 3 by means of unit-cell-wise strain and polarization maps obtained with high resolution scanning transmission electron microscopy. Physical Review Letters, 109(4),

Interface control of bulk ferroelectric polarization (2012)
Journal Article
Yu, P., Luo, W., Yi, D., Zhang, J., Rossell, M., Yang, C., …others. (2012). Interface control of bulk ferroelectric polarization. Proceedings of the National Academy of Sciences, 109(25), 9710-9715

Mapping band alignment across complex oxide heterointerfaces (2012)
Journal Article
Huang, B., Chiu, Y., Huang, P., Wang, W., Tra, V. T., Yang, J., …Chu, Y. (2012). Mapping band alignment across complex oxide heterointerfaces. Physical Review Letters, 109(24),

Directed assembly of nano-scale phase variants in highly strained BiFeO3 thin films (2012)
Journal Article
Zhou, J., Trassin, M., He, Q., Tamura, N., Kunz, M., Cheng, C., …others. (2012). Directed assembly of nano-scale phase variants in highly strained BiFeO3 thin films. Journal of Applied Physics, 112(6),

Magnetotransport at domain walls in BiFeO 3 (2012)
Journal Article
He, Q., Yeh, C., Yang, J., Singh-Bhalla, G., Liang, C., Chiu, P., …others. (2012). Magnetotransport at domain walls in BiFeO 3. Physical Review Letters, 108(6),

Epitaxial photostriction-magnetostriction coupled self-assembled nanostructures (2012)
Journal Article
Liu, H., Chen, L., He, Q., Liang, C., Chen, Y., Chien, Y., …others. (2012). Epitaxial photostriction-magnetostriction coupled self-assembled nanostructures. ACS Nano, 6(8), 6952-6959

Orthorhombic BiFeO 3 (2012)
Journal Article
Yang, J., He, Q., Suresha, S., Kuo, C., Peng, C., Haislmaier, R., …others. (2012). Orthorhombic BiFeO 3. Physical Review Letters, 109(24),