Binary Controls on Interfacial Magnetism in Manganite Heterostructures

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 µB Mn...

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Bibliographic Details
Published in:Advanced functional materials 2018-08, Vol.28 (33), p.n/a
Main Authors: 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
Format: Article
Language:English
Subjects:
Accessibility
Coercivity
Coupling
Curie temperature
Electronic devices
Heterostructures
Information storage
interfacial magnetism
Lead titanates
Magnetic moments
Magnetic properties
Magnetism
magnetoelectric coupling
manganite/titanate interface
Materials science
Multilayers
oxygen octahedral coupling
Superlattices
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Summary: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 µB Mn−1), in a 9‐unit‐cell La2/3Sr1/3MnO3 (LSMO) layer via modifying interfacial boundary conditions. Moreover, the LSMO/PbTiO3‐based multilayers and superlattices that consist of PbTiO3/LSMO/NdGaO3 and PbTiO3/LSMO/PbTiO3 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. The broad magnetic tunability of a 9‐unit‐cell La2/3Sr1/2MnO3 (LSMO) with binary controls from oxygen octahedral coupling and magnetoelectric coupling is presented, including Curie temperature (TC), saturated moment (M S) and coercive field (H C). Also, two distinctTC and H C in LSMO/PbTiO3 multilayers are demonstrated, providing the feasibility of the interface‐resolved strategy to realize the concept of multiple‐accessible‐states in all‐oxide‐based electronic devices.
ISSN:1616-301X
1616-3028
DOI:10.1002/adfm.201801766