Emission Mössbauer study of CMR manganite La0.8Ca0.2MnO3 .I. Anomalous ferromagnetism

Vladimir Chechersky, Amar Nath, Honglyoul Ju, Richard L. Greene

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Using 57Co emission Mössbauer technique we present clear evidence that in Ca-doped manganite, the magnetic and paramagnetic phases coexist below TC , with the abundance of the latter increasing with temperature. Unlike the regular ferromagnetics, the variation of the hyperfine internal magnetic field Hint with temperature deviates considerably from the Brillouin relation, and exhibits an abrupt drop at TC . These features characterize magnetic transition as the first order one. Non-Brillouin behavior of Hint (T) and the temperature dependence of the shape of the magnetically split sextet indicate the presence of spin fluctuations in this material well below TC.

Original languageEnglish
Pages (from-to)727-731
Number of pages5
JournalFizika Nizkikh Temperatur (Kharkov)
Volume23
Issue number7
Publication statusPublished - 1997 Dec 1

Fingerprint

ferromagnetism
temperature dependence
temperature
magnetic fields

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Chechersky, Vladimir ; Nath, Amar ; Ju, Honglyoul ; Greene, Richard L. / Emission Mössbauer study of CMR manganite La0.8Ca0.2MnO3 .I. Anomalous ferromagnetism. In: Fizika Nizkikh Temperatur (Kharkov). 1997 ; Vol. 23, No. 7. pp. 727-731.
@article{e745eb8df149437dbed2c64e00e04bac,
title = "Emission M{\"o}ssbauer study of CMR manganite La0.8Ca0.2MnO3 .I. Anomalous ferromagnetism",
abstract = "Using 57Co emission M{\"o}ssbauer technique we present clear evidence that in Ca-doped manganite, the magnetic and paramagnetic phases coexist below TC , with the abundance of the latter increasing with temperature. Unlike the regular ferromagnetics, the variation of the hyperfine internal magnetic field Hint with temperature deviates considerably from the Brillouin relation, and exhibits an abrupt drop at TC . These features characterize magnetic transition as the first order one. Non-Brillouin behavior of Hint (T) and the temperature dependence of the shape of the magnetically split sextet indicate the presence of spin fluctuations in this material well below TC.",
author = "Vladimir Chechersky and Amar Nath and Honglyoul Ju and Greene, {Richard L.}",
year = "1997",
month = "12",
day = "1",
language = "English",
volume = "23",
pages = "727--731",
journal = "Fizika Nizkikh Temperatur",
issn = "0132-6414",
publisher = "ILTPE-B. Verkin Institute for Low Temperature Physics and Engineering",
number = "7",

}

Emission Mössbauer study of CMR manganite La0.8Ca0.2MnO3 .I. Anomalous ferromagnetism. / Chechersky, Vladimir; Nath, Amar; Ju, Honglyoul; Greene, Richard L.

In: Fizika Nizkikh Temperatur (Kharkov), Vol. 23, No. 7, 01.12.1997, p. 727-731.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Emission Mössbauer study of CMR manganite La0.8Ca0.2MnO3 .I. Anomalous ferromagnetism

AU - Chechersky, Vladimir

AU - Nath, Amar

AU - Ju, Honglyoul

AU - Greene, Richard L.

PY - 1997/12/1

Y1 - 1997/12/1

N2 - Using 57Co emission Mössbauer technique we present clear evidence that in Ca-doped manganite, the magnetic and paramagnetic phases coexist below TC , with the abundance of the latter increasing with temperature. Unlike the regular ferromagnetics, the variation of the hyperfine internal magnetic field Hint with temperature deviates considerably from the Brillouin relation, and exhibits an abrupt drop at TC . These features characterize magnetic transition as the first order one. Non-Brillouin behavior of Hint (T) and the temperature dependence of the shape of the magnetically split sextet indicate the presence of spin fluctuations in this material well below TC.

AB - Using 57Co emission Mössbauer technique we present clear evidence that in Ca-doped manganite, the magnetic and paramagnetic phases coexist below TC , with the abundance of the latter increasing with temperature. Unlike the regular ferromagnetics, the variation of the hyperfine internal magnetic field Hint with temperature deviates considerably from the Brillouin relation, and exhibits an abrupt drop at TC . These features characterize magnetic transition as the first order one. Non-Brillouin behavior of Hint (T) and the temperature dependence of the shape of the magnetically split sextet indicate the presence of spin fluctuations in this material well below TC.

UR - http://www.scopus.com/inward/record.url?scp=0009995566&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0009995566&partnerID=8YFLogxK

M3 - Article

VL - 23

SP - 727

EP - 731

JO - Fizika Nizkikh Temperatur

JF - Fizika Nizkikh Temperatur

SN - 0132-6414

IS - 7

ER -