Interfacial spin-glass-like state and exchange bias in epitaxial iridate-manganite heterostructure

Yu, Tao1,4,5; Liu, Qiying1; Chen, Pingbo1; Zhou, Liang1; Li, Hui3; Ning, Xingkun2; Qiu, Chunyin4,5; He, Hongtao1

2019-06-15

10.1016/j.jallcom.2019.03.018

JOURNAL OF ALLOYS AND COMPOUNDS   影响因子和分区

0925-8388

1873-4669

Interface engineering in transition metal oxide heterostructures not only gives rise to exotic physical phenomena, but also has potential applications in spintronics. In this study, we demonstrate the appearance of strong interfacial coupling in 5d paramagnetic SrIrO3 and 3d ferromagnetic La-0.67 Sr-0.33 MnO3 bilayers, which manifests itself in the dramatic enhancement of coercivity by about 70 times larger than that of the single La-0.67 Sr-0.33 MnO3 layer and the observation of an unexpected exchange bias effect up to 40 K. Systematic magnetic analysis further reveals the emergence of an interfacial spin glass state in this 5d-3d oxide bilayer. This interfacial-coupling-induced spin glass state is the underlying origin of the unconventional exchange bias effect rarely observed in paramagnetic/ferromagnetic heterostructures. (C) 2019 Elsevier B.V. All rights reserved.

5d-3d transition-metal oxides Pulsed-laser deposition Interfacial coupling Spin-glass-like state Exchange bias

SCI ; EI

英语

第一 ; 通讯

Technology and Innovation Commission of Shenzhen Municipality[KQJSCX20170727090712763]

Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering

Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:000464542700042

ELSEVIER SCIENCE SA

20191106625403

Glass ; Glass transition ; Iridium compounds ; Lanthanum compounds ; Manganese compounds ; Manganites ; Paramagnetism ; Pulsed laser deposition ; Strontium compounds ; Transition metal oxides ; Transition metals

Metallurgy and Metallography:531 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Laser Applications:744.9 ; Chemical Operations:802.3 ; Inorganic Compounds:804.2 ; Glass:812.3

MATERIALS SCIENCE

Web of Science

1.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
2.Hebei Univ, Coll Phys Sci & Technol, Hebei Key Lab Opt Elect Informat & Mat, Baoding 071002, Peoples R China
3.Hong Kong Univ Sci & Technol, Dept Phys, Clear Water Bay, Hong Kong, Peoples R China
4.Wuhan Univ, Minist Educ, Key Lab Artificial Micro & Nanostruct, Wuhan 430072, Hubei, Peoples R China
5.Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China

Yu, Tao,Liu, Qiying,Chen, Pingbo,et al. Interfacial spin-glass-like state and exchange bias in epitaxial iridate-manganite heterostructure[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,789:351-356.

Yu, Tao.,Liu, Qiying.,Chen, Pingbo.,Zhou, Liang.,Li, Hui.,...&He, Hongtao.(2019).Interfacial spin-glass-like state and exchange bias in epitaxial iridate-manganite heterostructure.JOURNAL OF ALLOYS AND COMPOUNDS,789,351-356.

Yu, Tao,et al."Interfacial spin-glass-like state and exchange bias in epitaxial iridate-manganite heterostructure".JOURNAL OF ALLOYS AND COMPOUNDS 789(2019):351-356.