131687 20241125101141.0 doi 10.1021/jacs.3c04521 sideral 137168 ART-2023-137168 eng Namba, Morito Large Perpendicular Magnetic Anisotropy Induced by an Intersite Charge Transfer in Strained EuVO2H Films 2023 Perovskite oxides ABO3 continue to be a major focus in materials science. Of particular interest is the interplay between A and B cations as exemplified by intersite charge transfer (ICT), which causes novel phenomena including negative thermal expansion and metal–insulator transition. However, the ICT properties were achieved and optimized by cationic substitution or ordering. Here we demonstrate an anionic approach to induce ICT using an oxyhydride perovskite, EuVO2H, which has alternating layers of EuH and VO2. A bulk EuVO2H behaves as a ferromagnetic insulator with a relatively high transition temperature (TC) of 10 K. However, the application of external pressure to the EuIIVIIIO2H bulk or compressive strain from the substrate in the thin films induces ICT from the EuIIH layer to the VIIIO2 layer due to the extended empty V dxy orbital. The ICT phenomenon causes the VO2 layer to become conductive, leading to an increase in TC that is dependent on the number of carriers in the dxy orbitals (up to a factor of 4 for 10 nm thin films). In addition, a large perpendicular magnetic anisotropy appears with the ICT for the films of <100 nm, which is unprecedented in materials with orbital-free Eu2+, opening new perspectives for applications. The present results provide opportunities for the acquisition of novel functions by alternating transition metal/rare earth layers with heteroanions. info:eu-repo/semantics/closedAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 14.5 2023 CHEMISTRY, MULTIDISCIPLINARY 18 / 231 = 0.078 2023 Q1 T1 5.489 2023 Biochemistry 2023 Q1 Colloid and Surface Chemistry 2023 Q1 Chemistry (miscellaneous) 2023 Q1 Catalysis 2023 Q1 24.4 2023 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Takatsu, Hiroshi Mikita, Riho Sijia, Yao Murayama, Kantaro Li, Hao-Bo Terada, Ryo Tassel, Cédric Ubukata, Hiroki Ochi, Masayuki Saez-Puche, Regino Palacios Latasa, Elias Universidad de Zaragoza (orcid)0000-0003-3567-7030 Ishimatsu, Naoki Shiga, Daisuke Kumigashira, Hiroshi Kinjo, Katsuki Kitagawa, Shunsaku Ishida, Kenji Terashima, Takahito Fujita, Koji Mashiko, Takeaki Yanagisawa, Keiichi Kimoto, Koji Kageyama, Hiroshi 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 145, 40 (2023), 21807-21816 J. Am. Chem. Soc. Journal of the American Chemical Society 0002-7863 4555209 http://zaguan.unizar.es/record/131687/files/texto_completo.pdf Versión publicada 3017828 http://zaguan.unizar.es/record/131687/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:131687 articulos driver 2024-11-22-12:02:32 ARTICLE