Perovskite manganites: Potential materials for magnetic cooling at or near room temperature

Y. Xu; M. Meier; P. Das; M. R. Koblischka; U. Hartmann

doi:10.1016/S1463-0184(02)00049-7

Perovskite manganites: Potential materials for magnetic cooling at or near room temperature

Y. Xu, M. Meier, P. Das, M. R. Koblischka, U. Hartmann

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

102 Citations (Scopus)

Abstract

Perovskite manganites are known as functional materials showing colossal magnetoresistance and are used as magnetic sensors. We report on the synthesis and characterization of La_0.67Ca_0.33MnO₃, La_0.67Sr_0.33MnO₃, and La_0.67Ba_0.33MnO₃ polycrystalline bulk materials. Detailed measurements of the magnetization as function of temperature and magnetic field for these samples were carried out. Significant entropy changes near the Curie temperatures are obtained from the magnetization data. The specific heat changes of these samples near their phase transition temperatures are derived from magnetic measurements. Our results and the relevant data from various references are summarized. Furthermore the magnetocaloric effects and potential applications in magnetic cooling of perovskite manganite materials are evaluated.

Original language	English
Pages (from-to)	383-389
Number of pages	7
Journal	Crystal Engineering
Volume	5
Issue number	3-4 SPEC.
DOIs	https://doi.org/10.1016/S1463-0184(02)00049-7
Publication status	Published - 2002 Jan 1
Externally published	Yes

Keywords

Magnetic entropy changes
Magnetic refrigeration
Magnetocarloric effects
Perovskite manganites

ASJC Scopus subject areas

Chemistry(all)
Materials Chemistry

Access to Document

10.1016/S1463-0184(02)00049-7

Cite this

@article{be1a752db77c4ef38237c84d6717a65a,

title = "Perovskite manganites: Potential materials for magnetic cooling at or near room temperature",

abstract = "Perovskite manganites are known as functional materials showing colossal magnetoresistance and are used as magnetic sensors. We report on the synthesis and characterization of La0.67Ca0.33MnO3, La0.67Sr0.33MnO3, and La0.67Ba0.33MnO3 polycrystalline bulk materials. Detailed measurements of the magnetization as function of temperature and magnetic field for these samples were carried out. Significant entropy changes near the Curie temperatures are obtained from the magnetization data. The specific heat changes of these samples near their phase transition temperatures are derived from magnetic measurements. Our results and the relevant data from various references are summarized. Furthermore the magnetocaloric effects and potential applications in magnetic cooling of perovskite manganite materials are evaluated.",

keywords = "Magnetic entropy changes, Magnetic refrigeration, Magnetocarloric effects, Perovskite manganites",

author = "Y. Xu and M. Meier and P. Das and Koblischka, {M. R.} and U. Hartmann",

year = "2002",

month = jan,

day = "1",

doi = "10.1016/S1463-0184(02)00049-7",

language = "English",

volume = "5",

pages = "383--389",

journal = "Crystal Engineering",

issn = "1463-0184",

publisher = "Pergamon Press Ltd.",

number = "3-4 SPEC.",

}

TY - JOUR

T1 - Perovskite manganites

T2 - Potential materials for magnetic cooling at or near room temperature

AU - Xu, Y.

AU - Meier, M.

AU - Das, P.

AU - Koblischka, M. R.

AU - Hartmann, U.

PY - 2002/1/1

Y1 - 2002/1/1

N2 - Perovskite manganites are known as functional materials showing colossal magnetoresistance and are used as magnetic sensors. We report on the synthesis and characterization of La0.67Ca0.33MnO3, La0.67Sr0.33MnO3, and La0.67Ba0.33MnO3 polycrystalline bulk materials. Detailed measurements of the magnetization as function of temperature and magnetic field for these samples were carried out. Significant entropy changes near the Curie temperatures are obtained from the magnetization data. The specific heat changes of these samples near their phase transition temperatures are derived from magnetic measurements. Our results and the relevant data from various references are summarized. Furthermore the magnetocaloric effects and potential applications in magnetic cooling of perovskite manganite materials are evaluated.

AB - Perovskite manganites are known as functional materials showing colossal magnetoresistance and are used as magnetic sensors. We report on the synthesis and characterization of La0.67Ca0.33MnO3, La0.67Sr0.33MnO3, and La0.67Ba0.33MnO3 polycrystalline bulk materials. Detailed measurements of the magnetization as function of temperature and magnetic field for these samples were carried out. Significant entropy changes near the Curie temperatures are obtained from the magnetization data. The specific heat changes of these samples near their phase transition temperatures are derived from magnetic measurements. Our results and the relevant data from various references are summarized. Furthermore the magnetocaloric effects and potential applications in magnetic cooling of perovskite manganite materials are evaluated.

KW - Magnetic entropy changes

KW - Magnetic refrigeration

KW - Magnetocarloric effects

KW - Perovskite manganites

UR - http://www.scopus.com/inward/record.url?scp=0037219905&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037219905&partnerID=8YFLogxK

U2 - 10.1016/S1463-0184(02)00049-7

DO - 10.1016/S1463-0184(02)00049-7

M3 - Article

AN - SCOPUS:0037219905

SN - 1463-0184

VL - 5

SP - 383

EP - 389

JO - Crystal Engineering

JF - Crystal Engineering

IS - 3-4 SPEC.

ER -

Perovskite manganites: Potential materials for magnetic cooling at or near room temperature

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this