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

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Emission Mössbauer study of CMR manganite La<sub>0.8</sub>Ca<sub>0.2</sub>MnO<sub>3</sub> .I. Anomalous ferromagnetism'. Together they form a unique fingerprint.

  • Cite this