Magnetic entropy change in La0.75Ca0.25-xSrxMnO3 perovskites

Z. B. Guo; W. Yang; Y. T. Shen; Y. W. Du

doi:10.1016/S0038-1098(97)10064-3

Magnetic entropy change in La_0.75Ca_0.25-xSr_xMnO₃ perovskites

Z. B. Guo^*, W. Yang, Y. T. Shen, Y. W. Du

^*Corresponding author for this work

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

57 Scopus citations

Abstract

Magnetic entropy change has been studied in a series of polycrystalline samples of La_0.75Ca_0.25-xSr_xMnO₃ with fixed carrier concentration and gradual change in the average ionic radius of the La site 〈r_A〉. In a fixed crystal structure with orthorhombic or rhombohedral phase, we found that the magnetic entropy change decreases with increasing 〈r_A〉. This phenomenon has been attributed to the difference in the volume thermal expansion at T_c which is influenced by 〈r_A〉. A smaller 〈r_A〉 would be beneficial for obtaining larger magnetic entropy change.

Original language	English (US)
Pages (from-to)	89-92
Number of pages	4
Journal	Solid State Communications
Volume	105
Issue number	2
DOIs	https://doi.org/10.1016/S0038-1098(97)10064-3
State	Published - Jan 1998
Externally published	Yes

Keywords

A. Magnetically ordered materials
D. Phase transitions
D. Thermodynamic properties

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

Access to Document

10.1016/S0038-1098(97)10064-3

Cite this

@article{cb26dcb52e284c4b9926e3ff6c06ca83,

title = "Magnetic entropy change in La0.75Ca0.25-xSrxMnO3 perovskites",

abstract = "Magnetic entropy change has been studied in a series of polycrystalline samples of La0.75Ca0.25-xSrxMnO3 with fixed carrier concentration and gradual change in the average ionic radius of the La site 〈rA〉. In a fixed crystal structure with orthorhombic or rhombohedral phase, we found that the magnetic entropy change decreases with increasing 〈rA〉. This phenomenon has been attributed to the difference in the volume thermal expansion at Tc which is influenced by 〈rA〉. A smaller 〈rA〉 would be beneficial for obtaining larger magnetic entropy change.",

keywords = "A. Magnetically ordered materials, D. Phase transitions, D. Thermodynamic properties",

author = "Guo, {Z. B.} and W. Yang and Shen, {Y. T.} and Du, {Y. W.}",

year = "1998",

month = jan,

doi = "10.1016/S0038-1098(97)10064-3",

language = "English (US)",

volume = "105",

pages = "89--92",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier",

number = "2",

}

TY - JOUR

T1 - Magnetic entropy change in La0.75Ca0.25-xSrxMnO3 perovskites

AU - Guo, Z. B.

AU - Yang, W.

AU - Shen, Y. T.

AU - Du, Y. W.

PY - 1998/1

Y1 - 1998/1

N2 - Magnetic entropy change has been studied in a series of polycrystalline samples of La0.75Ca0.25-xSrxMnO3 with fixed carrier concentration and gradual change in the average ionic radius of the La site 〈rA〉. In a fixed crystal structure with orthorhombic or rhombohedral phase, we found that the magnetic entropy change decreases with increasing 〈rA〉. This phenomenon has been attributed to the difference in the volume thermal expansion at Tc which is influenced by 〈rA〉. A smaller 〈rA〉 would be beneficial for obtaining larger magnetic entropy change.

AB - Magnetic entropy change has been studied in a series of polycrystalline samples of La0.75Ca0.25-xSrxMnO3 with fixed carrier concentration and gradual change in the average ionic radius of the La site 〈rA〉. In a fixed crystal structure with orthorhombic or rhombohedral phase, we found that the magnetic entropy change decreases with increasing 〈rA〉. This phenomenon has been attributed to the difference in the volume thermal expansion at Tc which is influenced by 〈rA〉. A smaller 〈rA〉 would be beneficial for obtaining larger magnetic entropy change.

KW - A. Magnetically ordered materials

KW - D. Phase transitions

KW - D. Thermodynamic properties

UR - http://www.scopus.com/inward/record.url?scp=0031621674&partnerID=8YFLogxK

U2 - 10.1016/S0038-1098(97)10064-3

DO - 10.1016/S0038-1098(97)10064-3

M3 - Article

AN - SCOPUS:0031621674

SN - 0038-1098

VL - 105

SP - 89

EP - 92

JO - Solid State Communications

JF - Solid State Communications

IS - 2

ER -