Large magnetic entropy change in La0.67-xGdxCa0.33MnO3

H. Huang; Z. B. Guo; D. H. Wang; Y. W. Du

doi:10.1016/S0304-8853(97)00132-7

Large magnetic entropy change in La_0.67-xGd_xCa_0.33MnO₃

H. Huang^*, Z. B. Guo, D. H. Wang, Y. W. Du

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

Abstract

A magnetic entropy change larger than that of gadolinium has been observed in perovskite manganites La_0.67-xGd_xCa_0.33MnO₃ (x = 0,0.05 0.1, and 0.15) with fixed carrier concentration. The large magnetic entropy change produced by the abrupt reduction of magnetization is attributed to an anomalous thermal expansion at the Curie temperature. This phenomenon indicates that perovskite manganites have some potential applications for magnetic refrigerants in an extended high-temperature range.

Original language	English (US)
Pages (from-to)	302-304
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	173
Issue number	3
DOIs	https://doi.org/10.1016/S0304-8853(97)00132-7
State	Published - Sep 1997
Externally published	Yes

Keywords

Curie temperature
Gadolinium
Magnetic entropy
Magnetic refrigerants
Perovskite

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/S0304-8853(97)00132-7

Cite this

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title = "Large magnetic entropy change in La0.67-xGdxCa0.33MnO3",

abstract = "A magnetic entropy change larger than that of gadolinium has been observed in perovskite manganites La0.67-xGdxCa0.33MnO3 (x = 0,0.05 0.1, and 0.15) with fixed carrier concentration. The large magnetic entropy change produced by the abrupt reduction of magnetization is attributed to an anomalous thermal expansion at the Curie temperature. This phenomenon indicates that perovskite manganites have some potential applications for magnetic refrigerants in an extended high-temperature range.",

keywords = "Curie temperature, Gadolinium, Magnetic entropy, Magnetic refrigerants, Perovskite",

author = "H. Huang and Guo, {Z. B.} and Wang, {D. H.} and Du, {Y. W.}",

year = "1997",

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doi = "10.1016/S0304-8853(97)00132-7",

language = "English (US)",

volume = "173",

pages = "302--304",

journal = "Journal of Magnetism and Magnetic Materials",

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TY - JOUR

T1 - Large magnetic entropy change in La0.67-xGdxCa0.33MnO3

AU - Huang, H.

AU - Guo, Z. B.

AU - Wang, D. H.

AU - Du, Y. W.

PY - 1997/9

Y1 - 1997/9

N2 - A magnetic entropy change larger than that of gadolinium has been observed in perovskite manganites La0.67-xGdxCa0.33MnO3 (x = 0,0.05 0.1, and 0.15) with fixed carrier concentration. The large magnetic entropy change produced by the abrupt reduction of magnetization is attributed to an anomalous thermal expansion at the Curie temperature. This phenomenon indicates that perovskite manganites have some potential applications for magnetic refrigerants in an extended high-temperature range.

AB - A magnetic entropy change larger than that of gadolinium has been observed in perovskite manganites La0.67-xGdxCa0.33MnO3 (x = 0,0.05 0.1, and 0.15) with fixed carrier concentration. The large magnetic entropy change produced by the abrupt reduction of magnetization is attributed to an anomalous thermal expansion at the Curie temperature. This phenomenon indicates that perovskite manganites have some potential applications for magnetic refrigerants in an extended high-temperature range.

KW - Curie temperature

KW - Gadolinium

KW - Magnetic entropy

KW - Magnetic refrigerants

KW - Perovskite

UR - http://www.scopus.com/inward/record.url?scp=0031549360&partnerID=8YFLogxK

U2 - 10.1016/S0304-8853(97)00132-7

DO - 10.1016/S0304-8853(97)00132-7

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VL - 173

SP - 302

EP - 304

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 3

ER -