Magnetic relaxation and its relation to magnetoresistance in FeCr 2S4 spinel

Z. Klencsár, E. Kuzmann, Z. Homonnay, A. Vértes, A. Simopoulos, E. Devlin, G. Kallias

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The temperature dependence of the local electronic and magnetic state of iron in the chalcogenide spinel FeCr2S4 has been studied in detail around the Curie temperature with the help of 57Fe Mössbauer spectroscopy. Ferrimagnetic order was found to break down anomalously at ≅ 20 K below the Curie temperature in FeCr2S 4. Magnetic relaxation of iron magnetic moments was observed with increasing relaxation rate above T ≅ 155 K. The possible relation of magnetic relaxation to the effect of magnetoresistance is discussed.

Original languageEnglish
Pages (from-to)261-266
Number of pages6
JournalHyperfine Interactions
Volume144-145
Issue number1-4
DOIs
Publication statusPublished - 2002

Fingerprint

Magnetic relaxation
magnetic relaxation
Magnetoresistance
Curie temperature
spinel
Iron
iron
Magnetic moments
magnetic moments
breakdown
Spectroscopy
temperature dependence
electronics
spectroscopy
Temperature
spinell

Keywords

  • Chalcogenides
  • Magnetoresistance
  • Mössbauer spectroscopy

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Nuclear and High Energy Physics

Cite this

Magnetic relaxation and its relation to magnetoresistance in FeCr 2S4 spinel. / Klencsár, Z.; Kuzmann, E.; Homonnay, Z.; Vértes, A.; Simopoulos, A.; Devlin, E.; Kallias, G.

In: Hyperfine Interactions, Vol. 144-145, No. 1-4, 2002, p. 261-266.

Research output: Contribution to journalArticle

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AU - Simopoulos, A.

AU - Devlin, E.

AU - Kallias, G.

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AB - The temperature dependence of the local electronic and magnetic state of iron in the chalcogenide spinel FeCr2S4 has been studied in detail around the Curie temperature with the help of 57Fe Mössbauer spectroscopy. Ferrimagnetic order was found to break down anomalously at ≅ 20 K below the Curie temperature in FeCr2S 4. Magnetic relaxation of iron magnetic moments was observed with increasing relaxation rate above T ≅ 155 K. The possible relation of magnetic relaxation to the effect of magnetoresistance is discussed.

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KW - Magnetoresistance

KW - Mössbauer spectroscopy

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