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Binary Controls on Interfacial Magnetism in Manganite Heterostructures
Author(s) -
Chen Pingfan,
Huang Zhen,
Li Changjian,
Zhang Bangmin,
Bao Nina,
Yang Ping,
Yu Xiaojiang,
Zeng Shengwei,
Tang Chunhua,
Wu Xiaohan,
Chen Jingsheng,
Ding Jun,
Pennycook Stephen John,
Ariando A.,
Venkatesan Thirumalai Venky,
Chow Gan Moog
Publication year - 2018
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201801766
Subject(s) - materials science , heterojunction , condensed matter physics , manganite , curie temperature , magnetism , coercivity , superlattice , ferroelectricity , magnetic moment , ferromagnetism , optoelectronics , dielectric , physics
The complex interfacial correlations provide new routes toward tunable functionalities. Here, the wide range of tunabilities for magnetic properties are presented, including Curie temperature (from 245 to 320 K), coercive field (from 2 to 205 Oe), and saturated magnetic moment (from 0.9 to 2.8 µ B Mn −1 ), in a 9‐unit‐cell La 2/3 Sr 1/3 MnO 3 (LSMO) layer via modifying interfacial boundary conditions. Moreover, the LSMO/PbTiO 3 ‐based multilayers and superlattices that consist of PbTiO 3 /LSMO/NdGaO 3 and PbTiO 3 /LSMO/PbTiO 3 interfaces are characterized by two distinct Curie temperatures and coercive fields. The results reveal the feasibility of the interface‐resolved strategy based on boundary modification in fabricating potential devices with multiple accessible states for information storage. The wide‐range modulations on magnetic properties at LSMO/titanate interfaces are explained in terms of binary controls arising from the oxygen octahedral coupling (OOC) and magnetoelectric coupling (MEC). The results not only shed some light on understanding interfacial correlations in oxide heterostructures, but also pave an alternative path for exploring multiple accessible states in all‐oxide‐based electronic devices.