Properties of Nd Doped La0.5Ba0.5CoO3 Pervoskite

DOI

10.2991/ice2me-19.2019.51How to use a DOI?

Keywords

La0.5-xNdxBa0.5CoO3; immediate spin state; noncollinear spin structure; electron transport

Abstract

The properties of La0.5-xNdxBa0.5CoO3 (0≤ x ≤0.425) has been investigated. All samples show a cubic structure at room temperature. The Curie temperature TC and the estimated molecular magnetic moment of the samples at 5K decrease monotonically with increasing Nd-doping level. The results are discussed in terms of the double exchange (DE) interaction associated with the variation of Co-O bond length and Co-O bond angle due to the substitution of smaller Nd3+ ions for larger La3+ ions. At low temperature, the ferromagnetic (FM) interaction is greatly suppressed by the Nd-doping, illustrating a special noncollinear spin structure. The spin state of Co ions derived from the Curie constant is not affected by the Nd doping and remains an intermediate spin state. The electric resistance measurements show that the conduction of the materials belongs to the thermal activation process below TC, while it belongs to the variable range hopping conduction of polarons over TC except for parent La0.5Ba0.5CoO3.

Copyright

© 2019, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Junhua Wang
AU  - Zhenhua Wang
AU  - Baoxin Huang
AU  - Yang Yu
AU  - Ruzhen Zhang
AU  - Yihua Liu
PY  - 2019/03
DA  - 2019/03
TI  - Properties of Nd Doped La0.5Ba0.5CoO3 Pervoskite
BT  - Proceedings of the 2019 International Conference on Electronical, Mechanical and Materials Engineering (ICE2ME 2019)
PB  - Atlantis Press
SP  - 222
EP  - 225
SN  - 2352-5401
UR  - https://doi.org/10.2991/ice2me-19.2019.51
DO  - 10.2991/ice2me-19.2019.51
ID  - Wang2019/03
ER  -