Takamura, Yayoi - University of California, Davis - Department of Materials Science and Engineering

个人简介

B.S., 1998, Cornell University, Dept. Materials Science and Engineering M.S., 2000, Stanford University, Dept. Materials Science and Engineering Ph.D., 2004, Stanford University, Dept. Materials Science and Engineering Postdoctoral Research, U.C. Berkeley – Dept. Materials Science and Engineering

研究领域

The development of next generation spintronic devices, sensors, and low temperature solid oxide fuel cells requires the development of materials with new functional properties not found in conventional bulk materials. A novel route involves harnessing the unexpected physical phenomena that result from the changes in structure and chemistry which occur over nanometer scales at surfaces and interfaces. The approach of this work utilizes laser-assisted growth to control interfacial properties with atomic layer precision in combination with state-of-the-art techniques for characterizing the structural, chemical, magnetic, and electrical properties. In this way, a full understanding of the origins of new magnetic and electronic properties derived from interfacial mechanisms can be determined.

近期论文

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M.D. Biegalski, L. Qiao, Y. Gu, A. Mehta, Q. He, Y. Takamura, A. Borisevich, and L.-Q. Chen, “Impact of symmetry on the ferroelectric properties of CaTiO3 thin films”, Appl. Phys. Lett., 106, 162904 (2015); Errata: Appl. Phys. Lett., 106, 219901 (2015) B. Li, R.V. Chopdekar, E. Arenholz, A. Mehta, and Y. Takamura, “Unconventional switching behavior in La0.7Sr0.3MnO3/La0.7Sr0.3CoO3 exchange-spring bilayers,” Appl. Phys. Lett., 105, 202401 (2014) A.T. Wong, C. Beekman, H. Guo, W. Siemons, Z. Gai, E. Arenholz, Y. Takamura, and T.Z. Ward, “Strain driven anisotropic magnetoresistance in antiferromagnetic La0.4Sr0.6MnO3,” Appl. Phys. Lett., 105, 052401 (2014) M.D. Biegalski, Y. Takamura, A. Mehta, Z. Gai, S.V. Kalinin, H. Ambaye, V. Lauter, D. Fong, S.T. Pantelides,Y.M. Kim, J. He, A. Borisevich, W. Siemons, and H.M. Christen, “Interrelation between Structure – Magnetic Properties in La0.5Sr0.5CoO3,” Advanced Materials Interfaces (2014) D. Samal, T. Haiyan, Y. Takamura, W. Siemons, J. Verbeeck, G. Van Tendeloo, E. Arenholz, C.A. Jenkins, G. Rijnders, and G. Koster, “Direct structural and spectroscopic investigation of ultrathin films of tetragonal CuO: Six-fold coordinated copper,” Euro. Phys. Letters, 105, 17003 (2014) Y. Takamura, E. Folven, J.B.R. Shu, K.R. Lukes, B. Li, A. Scholl, A.T. Young, S.T. Retterer, T. Tybell, and J.K.Grepstad, “Spin-flop coupling and exchange bias in embedded complex oxide micromagnets,” Phys. Rev. Lett.,111, 107201 (2013) D. Samal, T. Haiyan, H. Molegraaf, B. Kuiper, W. Siemons, S. Bals, J. Verbeeck, G. Van Tendeloo, Y. Takamura,E. Arenholz, C.A. Jenkins, G. Rijnders, and G. Koster, “Experimental evidence for oxygen sublattice control in polar infinite layer SrCuO2,” Phys. Rev. Lett., 111, 096102 (2013) V.K. Malik, C.H. Vo, E. Arenholz, A. Scholl, A.T. Young, and Y. Takamura, “Magnetic correlation between La0.7Sr0.3MnO3 and La0.7Sr0.3CoO3 layers in artificial superlattices,” J. Appl. Phys., 113, 153907 (2013) R.V. Chopdekar, J. Heidler, C. Piamonteze, Y. Takamura, A. Scholl, S. Rusponi, H. Brune, L.J. Heyderman, and F. Nolting, “Strain-dependent magnetic configurations in manganite-titanate heterostructures proved with soft x-ray techniques” (invited), European Physical Journal B, 86, 241 (2013) M. Gu, Z. Wang, M.D. Biegalski, H.M. Christen, Y. Takamura, and N.D. Browning, “Antisite defects in La0.7Sr0.3MnO3 and La0.7Sr0.3FeO3,” Appl. Phys. Lett., 102, 151911 (2013) Y. Takamura, “Characterization of antiferromagnetic/ferromagnetic perovskite oxide superlattices“ (invited book chapter), Nanostructured Materials for Magnetoelectronics, Ed. B. Aktas and F. Mikailzade, Springer Series in Materials Science, Vol 175, 119-147, (2013) ISBN: 978-3-642-34957-7 (Print) 978-3-642-34958-4 (Online) C. He, A.J. Grutter, M. Gu, N.D. Browning, Y. Takamura, B.J. Kirby, J.A. Borchers, J.W. Kim, M.R. Fitzsimmons, X. Zhai, V.V. Mehta, F.J. Wong, and Y. Suzuki, “Interfacial ferromagnetism and exchange bias in CaRuO3/CaMnO3 superlattices,” Phys. Rev. Lett., 109, 197202 (2012) M. Gu, F. Yang, E. Arenholz, N.D. Browning, and Y. Takamura, “Cation uniformity and magnetic properties of La0.7Sr0.3Mn0.5Fe0.5O3 thin films,” J. Mag. Mag. Mater., 325, 69-74 (2013) E. Folven, Y. Takamura, and J.K. Grepstad, “X-PEEM study of antiferromagnetic domain patterns in LaFeO3 thinfilms and embedded nanostructures,” J. Electron Spectroscopy and Related Phenomena, 185, 381-388 (2012) (invited paper) R.V. Chopdekar, V.K. Malik, A. Fraile Rodriguez, L. Le Guyader, Y. Takamura, A. Scholl, D. Stender, C.W. Schneider, C. Bernhard, F. Nolting, and L. J. Heyderman, “Spatially Resolved Strain-imprinted Magnetic States in an Artificial Multiferroic,” Phys. Rev. B, 86, 014408 (2012), (highlighted as an Editor’s Suggestion) E. Folven, A. Scholl, A. Young, S.T. Retterer, J.E. Boschker, T. Tybell, Y. Takamura, and J. Grepstad, “Crossover from Spin-Flop Coupling to Collinear Spin Alignment in Antiferromagnetic/Ferromagnetic Nanostructures,” Nano Letters, 12, 2386-2390 (2012) M. Gu, M.D. Biegalski, H.M. Christen, C. Song, C.R. Dearden, N.D. Browning and Yayoi Takamura, “Strain relaxation defects in perovskite oxide superlattices,” J. Mater. Res., 27, 1436 (2012) Meng Gu, C. Song, F. Yang, E. Arenholz, N.D. Browning, and Yayoi Takamura, “Tuning magnetic and transport properties through strain engineering in La0.7Sr0.3MnO3/La0.5Sr0.5TiO3 superlattices,” J. Appl. Phys., 111, 084906 (2012) N.Kemik, S.V. Ushakov, M. Gu, N. Schichtel, C. Korte, N. Browning, Y. Takamura and A. Navrotsky, “Yttria-stabilized zirconia crystallization in Al2O3/YSZ multilayers,” J. Mater. Res., 27, 939-943 (2012) F. Yang, M. Gu, E. Arenholz, N.D. Browning, and Y. Takamura, “The effect of interfacial charge transfer on ferromagnetism in perovskite oxide superlattices,” J. Appl. Phys., 111, 013911 (2012) M. Gu, C.R. Dearden, C. Song, N.D. Browning, and Y. Takamura, “Structural variability in La0.5Sr0.5TiO3±δ thinfilms,” Appl. Phys. Lett., 99, 261907 (2011) E. Folven, A. Scholl, A. Young, S.T. Retterer, J.E. Boschker, T. Tybell, Y. Takamura, and J.K. Grepstad, “Effects of nanostructuring and substrate symmetry on antiferromagnetic domain structure in LaFeO3 thin films,” Phys. Rev. B,84, 220410(R) (2011) N. Kemik, M. Gu, C.-Y. Chang, Y. Song, M. Bibee, A. Mehta, M.D. Biegalski, H.M. Christen, N.D. Browning and Y. Takamura, “Resonant x-ray reflectivity study of perovskite oxide superlattices,” Appl. Phys. Lett., 99, 201908 (2011) T.M. Dao, P.S. Mondal, Y. Takamura, E. Arenholz and J. Lee, “Metal-insulator transition in low dimensional La0.75Sr0.25VO3 thin films,” Appl. Phys. Lett., 99, 112111 (2011) N. Kemik, Y. Takamura and A. Navrotsky, “Thermochemistry of La0.7Sr0.3Mn1-xFexO3 Solid Solutions (0