Magnetocaloric effect in the ordered double perovskite Sr 2FeMo1-xWxO6

W. Zhong; W. Liu; X. L. Wu; N. J. Tang; W. Chen; C. T. Au; Y. W. Du

doi:10.1016/j.ssc.2004.07.060

Magnetocaloric effect in the ordered double perovskite Sr ₂FeMo_1-xW_xO₆

W. Zhong^*, W. Liu, X. L. Wu, N. J. Tang, W. Chen, C. T. Au, Y. W. Du

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

22 Citations (Scopus)

Abstract

The effects of B-site cations substitution and antisite (AS) defects on the Curie temperature (T_C) and the magnetocaloric effect in the double perovskites Sr₂FeMo_1-xW_xO₆ (0 ≤ x ≤ 0.5) prepared by mechanical alloying have been investigated. With a small amount of W doping, not only the magnetization but also the magnetic entropy change (|S_M|) have been enhanced. The Curie temperature has been analyzed by two methods: extrapolation and derivative. The experimental results indicate that T_C decreases with increasing W substitution independently of the method used to obtain T_C. The maximum of the magnetic entropy change peaks at the T_C obtained by the derivative method, and a large magnetic entropy change (∼ 1.32 J/kg K) is obtained at 381 K in the sample Sr₂FeMo_1-xW _xO₆ (x=0.35) by changing the applied magnetic field by 10 kOe.

Original language	English
Pages (from-to)	157-162
Number of pages	6
Journal	Solid State Communications
Volume	132
Issue number	3-4
DOIs	https://doi.org/10.1016/j.ssc.2004.07.060
Publication status	Published - Oct 2004

Scopus Subject Areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

User-Defined Keywords

A. Double perovskite
A. Magnetically ordered materials
D. Magnetocaloric effect

Access to Document

10.1016/j.ssc.2004.07.060

Cite this

@article{3a467c89f0514420b2a51d3c9503436f,

title = "Magnetocaloric effect in the ordered double perovskite Sr 2FeMo1-xWxO6",

abstract = "The effects of B-site cations substitution and antisite (AS) defects on the Curie temperature (TC) and the magnetocaloric effect in the double perovskites Sr2FeMo1-xWxO6 (0 ≤ x ≤ 0.5) prepared by mechanical alloying have been investigated. With a small amount of W doping, not only the magnetization but also the magnetic entropy change (|SM|) have been enhanced. The Curie temperature has been analyzed by two methods: extrapolation and derivative. The experimental results indicate that TC decreases with increasing W substitution independently of the method used to obtain TC. The maximum of the magnetic entropy change peaks at the TC obtained by the derivative method, and a large magnetic entropy change (∼ 1.32 J/kg K) is obtained at 381 K in the sample Sr2FeMo1-xW xO6 (x=0.35) by changing the applied magnetic field by 10 kOe.",

keywords = "A. Double perovskite, A. Magnetically ordered materials, D. Magnetocaloric effect",

author = "W. Zhong and W. Liu and Wu, {X. L.} and Tang, {N. J.} and W. Chen and Au, {C. T.} and Du, {Y. W.}",

note = "Funding Information: This work is supported by the National Natural Science Foundation of China under Grant No. 50072007, and the National Key Project for Basic Research (No. G1999064508), People's Republic of China.",

year = "2004",

month = oct,

doi = "10.1016/j.ssc.2004.07.060",

language = "English",

volume = "132",

pages = "157--162",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Ltd.",

number = "3-4",

}

TY - JOUR

T1 - Magnetocaloric effect in the ordered double perovskite Sr 2FeMo1-xWxO6

AU - Zhong, W.

AU - Liu, W.

AU - Wu, X. L.

AU - Tang, N. J.

AU - Chen, W.

AU - Au, C. T.

AU - Du, Y. W.

N1 - Funding Information: This work is supported by the National Natural Science Foundation of China under Grant No. 50072007, and the National Key Project for Basic Research (No. G1999064508), People's Republic of China.

PY - 2004/10

Y1 - 2004/10

N2 - The effects of B-site cations substitution and antisite (AS) defects on the Curie temperature (TC) and the magnetocaloric effect in the double perovskites Sr2FeMo1-xWxO6 (0 ≤ x ≤ 0.5) prepared by mechanical alloying have been investigated. With a small amount of W doping, not only the magnetization but also the magnetic entropy change (|SM|) have been enhanced. The Curie temperature has been analyzed by two methods: extrapolation and derivative. The experimental results indicate that TC decreases with increasing W substitution independently of the method used to obtain TC. The maximum of the magnetic entropy change peaks at the TC obtained by the derivative method, and a large magnetic entropy change (∼ 1.32 J/kg K) is obtained at 381 K in the sample Sr2FeMo1-xW xO6 (x=0.35) by changing the applied magnetic field by 10 kOe.

AB - The effects of B-site cations substitution and antisite (AS) defects on the Curie temperature (TC) and the magnetocaloric effect in the double perovskites Sr2FeMo1-xWxO6 (0 ≤ x ≤ 0.5) prepared by mechanical alloying have been investigated. With a small amount of W doping, not only the magnetization but also the magnetic entropy change (|SM|) have been enhanced. The Curie temperature has been analyzed by two methods: extrapolation and derivative. The experimental results indicate that TC decreases with increasing W substitution independently of the method used to obtain TC. The maximum of the magnetic entropy change peaks at the TC obtained by the derivative method, and a large magnetic entropy change (∼ 1.32 J/kg K) is obtained at 381 K in the sample Sr2FeMo1-xW xO6 (x=0.35) by changing the applied magnetic field by 10 kOe.

KW - A. Double perovskite

KW - A. Magnetically ordered materials

KW - D. Magnetocaloric effect

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U2 - 10.1016/j.ssc.2004.07.060

DO - 10.1016/j.ssc.2004.07.060

M3 - Journal article

AN - SCOPUS:4444256774

SN - 0038-1098

VL - 132

SP - 157

EP - 162

JO - Solid State Communications

JF - Solid State Communications

IS - 3-4

ER -