期刊
JOURNAL OF APPLIED PHYSICS
卷 122, 期 8, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5000133
关键词
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资金
- DST-New Delhi, India, in the form of INSPIRE Faculty Award
We have studied the electronic and magnetic properties of BaTiO3 (BTO)/La0.7Sr0.3MnO3(LSMO)bilayerthin films deposited by pulse laser deposition on SrTiO3 (100) substrate. X-ray diffraction and reciprocal space mappings show that the grown bilayers are single phase and epitaxial in nature. We observed by the X-ray absorption study that the relative hybridization of t(2g) orbitals of Ti 3d with oxygen 2p decreases with increasing Ti3+ fraction in the BTO layer. We found the anomalies in magnetization versus temperature behaviour near the structure transition of BTO, indicating coupling of the LSMO layer with the BTO structure. We also observed the pinched M-H hysteresis loop at low 5K in this bilayer, and this pinched behaviour completely disappeared when the BTO layer is used as the bottom layer of the bilayer. It is shown that this pinched hysteresis behaviour arises because of coupling of Ti3+ which is present at the interface in the nonstoichiometric BTO top layer with the bottom LSMO layer at the interface. Published by AIP Publishing.
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