Large magnetic entropy change in perovskite-type manganese oxides

Z. B. Guo; Y. W. Du; J. S. Zhu; H. Huang; W. P. Ding; D. Feng

doi:10.1103/PhysRevLett.78.1142

Large magnetic entropy change in perovskite-type manganese oxides

Z. B. Guo, Y. W. Du, J. S. Zhu, H. Huang, W. P. Ding, D. Feng

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

726 Scopus citations

Abstract

Magnetic entropy change larger than that of gadolinium has been observed in polycrystalline of La_1−xCa_xMnO₃(x=0.2and0.33)perovskite-type manganese oxide. The large magnetic entropy change produced by the abrupt reduction of magnetization is attributed to the anomalous thermal expansion just at the Curie temperature. The considerable magnetic entropy change was also observed in La_0.75Sr_0.25−yCa_yMnO₃near room temperature. The phenomenon of large magnetic entropy change and the convenient adjustment of the Curie temperature make the perovskite-type manganese oxides useful for magnetic refrigerants in an extended high temperature range even at room temperature.

Original language	English (US)
Pages (from-to)	1142-1145
Number of pages	4
Journal	Physical Review Letters
Volume	78
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.78.1142
State	Published - Feb 10 1997
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1103/PhysRevLett.78.1142

Cite this

@article{68b989e919c04aa0846c7a805c2e1f9e,

title = "Large magnetic entropy change in perovskite-type manganese oxides",

abstract = "Magnetic entropy change larger than that of gadolinium has been observed in polycrystalline of La1−xCaxMnO3(x=0.2and0.33)perovskite-type manganese oxide. The large magnetic entropy change produced by the abrupt reduction of magnetization is attributed to the anomalous thermal expansion just at the Curie temperature. The considerable magnetic entropy change was also observed in La0.75Sr0.25−yCayMnO3near room temperature. The phenomenon of large magnetic entropy change and the convenient adjustment of the Curie temperature make the perovskite-type manganese oxides useful for magnetic refrigerants in an extended high temperature range even at room temperature.",

author = "Guo, {Z. B.} and Du, {Y. W.} and Zhu, {J. S.} and H. Huang and Ding, {W. P.} and D. Feng",

year = "1997",

month = feb,

day = "10",

doi = "10.1103/PhysRevLett.78.1142",

language = "English (US)",

volume = "78",

pages = "1142--1145",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "6",

}

TY - JOUR

T1 - Large magnetic entropy change in perovskite-type manganese oxides

AU - Guo, Z. B.

AU - Du, Y. W.

AU - Zhu, J. S.

AU - Huang, H.

AU - Ding, W. P.

AU - Feng, D.

PY - 1997/2/10

Y1 - 1997/2/10

N2 - Magnetic entropy change larger than that of gadolinium has been observed in polycrystalline of La1−xCaxMnO3(x=0.2and0.33)perovskite-type manganese oxide. The large magnetic entropy change produced by the abrupt reduction of magnetization is attributed to the anomalous thermal expansion just at the Curie temperature. The considerable magnetic entropy change was also observed in La0.75Sr0.25−yCayMnO3near room temperature. The phenomenon of large magnetic entropy change and the convenient adjustment of the Curie temperature make the perovskite-type manganese oxides useful for magnetic refrigerants in an extended high temperature range even at room temperature.

AB - Magnetic entropy change larger than that of gadolinium has been observed in polycrystalline of La1−xCaxMnO3(x=0.2and0.33)perovskite-type manganese oxide. The large magnetic entropy change produced by the abrupt reduction of magnetization is attributed to the anomalous thermal expansion just at the Curie temperature. The considerable magnetic entropy change was also observed in La0.75Sr0.25−yCayMnO3near room temperature. The phenomenon of large magnetic entropy change and the convenient adjustment of the Curie temperature make the perovskite-type manganese oxides useful for magnetic refrigerants in an extended high temperature range even at room temperature.

UR - http://www.scopus.com/inward/record.url?scp=0039387050&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.78.1142

DO - 10.1103/PhysRevLett.78.1142

M3 - Article

AN - SCOPUS:0039387050

SN - 0031-9007

VL - 78

SP - 1142

EP - 1145

JO - Physical Review Letters

JF - Physical Review Letters

IS - 6

ER -

Large magnetic entropy change in perovskite-type manganese oxides

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this