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

Y. Xu, M. Meier, P. Das, Michael Rudolf Koblischka, U. Hartmann

Research output: Contribution to journalArticle

67 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 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.

Original languageEnglish
Pages (from-to)383-389
Number of pages7
JournalCrystal Engineering
Volume5
Issue number3-4 SPEC.
DOIs
Publication statusPublished - 2002 Jan 1
Externally publishedYes

Fingerprint

Magnetic refrigeration
Manganites
Perovskite
Magnetization
Colossal magnetoresistance
Magnetocaloric effects
Magnetic sensors
Functional materials
Magnetic variables measurement
Curie temperature
Superconducting transition temperature
Specific heat
Temperature distribution
Entropy
Phase transitions
Magnetic fields
Temperature
perovskite

Keywords

  • Magnetic entropy changes
  • Magnetic refrigeration
  • Magnetocarloric effects
  • Perovskite manganites

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

Cite this

Perovskite manganites : Potential materials for magnetic cooling at or near room temperature. / Xu, Y.; Meier, M.; Das, P.; Koblischka, Michael Rudolf; Hartmann, U.

In: Crystal Engineering, Vol. 5, No. 3-4 SPEC., 01.01.2002, p. 383-389.

Research output: Contribution to journalArticle

Xu, Y. ; Meier, M. ; Das, P. ; Koblischka, Michael Rudolf ; Hartmann, U. / Perovskite manganites : Potential materials for magnetic cooling at or near room temperature. In: Crystal Engineering. 2002 ; Vol. 5, No. 3-4 SPEC. pp. 383-389.
@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, {Michael Rudolf} and U. Hartmann",
year = "2002",
month = "1",
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, Michael Rudolf

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

VL - 5

SP - 383

EP - 389

JO - Crystal Engineering

JF - Crystal Engineering

SN - 1463-0184

IS - 3-4 SPEC.

ER -