Room temperature ferromagnetism in a Sr0.75Y 0.25CoO2.64 single crystal

Wataru Kobayashi; I. Terasaki

doi:10.1063/1.2355145

Room temperature ferromagnetism in a Sr0.75Y 0.25CoO2.64 single crystal

Wataru Kobayashi^*, I. Terasaki

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

6 Citations (Scopus)

Abstract

We have successfully prepared single crystals of Sr_0.75Y _0.25CoO_3-δ, which exhibit a ferromagnetic transition at 370 K. To our knowledge, this is the highest transition temperature (T _c) among perovskite Co oxides. The T_c and the saturation magnetization of the single crystal are larger than those of polycrystalline samples. We attribute these superior properties of the single crystals to a less disordered structure grown in thermal equilibrium conditions. This implies that the ferromagnetism is easily affected by deficiency or disordering.

Original language	English
Title of host publication	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
Pages	1223-1224
Number of pages	2
Volume	850
DOIs	https://doi.org/10.1063/1.2355145
Publication status	Published - 2006
Event	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States Duration: 2006 Aug 10 → 2006 Oct 17

Other

Other	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
Country/Territory	United States
City	Orlando, FL
Period	06/8/10 → 06/10/17

Keywords

A-site ordered structure
Co oxide
Ferromagnetism
Single crystal

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.2355145

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Kobayashi, W & Terasaki, I 2006, Room temperature ferromagnetism in a Sr0.75Y 0.25CoO2.64 single crystal. in LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24. vol. 850, pp. 1223-1224, LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24, Orlando, FL, United States, 06/8/10. https://doi.org/10.1063/1.2355145

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title = "Room temperature ferromagnetism in a Sr0.75Y 0.25CoO2.64 single crystal",

abstract = "We have successfully prepared single crystals of Sr0.75Y 0.25CoO3-δ, which exhibit a ferromagnetic transition at 370 K. To our knowledge, this is the highest transition temperature (T c) among perovskite Co oxides. The Tc and the saturation magnetization of the single crystal are larger than those of polycrystalline samples. We attribute these superior properties of the single crystals to a less disordered structure grown in thermal equilibrium conditions. This implies that the ferromagnetism is easily affected by deficiency or disordering.",

keywords = "A-site ordered structure, Co oxide, Ferromagnetism, Single crystal",

author = "Wataru Kobayashi and I. Terasaki",

year = "2006",

doi = "10.1063/1.2355145",

language = "English",

isbn = "0735403473",

volume = "850",

pages = "1223--1224",

booktitle = "LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24",

note = "LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 ; Conference date: 10-08-2006 Through 17-10-2006",

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T1 - Room temperature ferromagnetism in a Sr0.75Y 0.25CoO2.64 single crystal

AU - Kobayashi, Wataru

AU - Terasaki, I.

PY - 2006

Y1 - 2006

N2 - We have successfully prepared single crystals of Sr0.75Y 0.25CoO3-δ, which exhibit a ferromagnetic transition at 370 K. To our knowledge, this is the highest transition temperature (T c) among perovskite Co oxides. The Tc and the saturation magnetization of the single crystal are larger than those of polycrystalline samples. We attribute these superior properties of the single crystals to a less disordered structure grown in thermal equilibrium conditions. This implies that the ferromagnetism is easily affected by deficiency or disordering.

AB - We have successfully prepared single crystals of Sr0.75Y 0.25CoO3-δ, which exhibit a ferromagnetic transition at 370 K. To our knowledge, this is the highest transition temperature (T c) among perovskite Co oxides. The Tc and the saturation magnetization of the single crystal are larger than those of polycrystalline samples. We attribute these superior properties of the single crystals to a less disordered structure grown in thermal equilibrium conditions. This implies that the ferromagnetism is easily affected by deficiency or disordering.

KW - A-site ordered structure

KW - Co oxide

KW - Ferromagnetism

KW - Single crystal

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DO - 10.1063/1.2355145

M3 - Conference contribution

AN - SCOPUS:33947513181

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SN - 9780735403475

VL - 850

SP - 1223

EP - 1224

BT - LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24

T2 - LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24

Y2 - 10 August 2006 through 17 October 2006

ER -

Room temperature ferromagnetism in a Sr0.75Y 0.25CoO2.64 single crystal

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