Magnetovolume effect in the paramagnetic phase of Sm1-xSrxMnO3 (x=0.45, 0.33) compounds

Authors
Marquina, C Ibarra, MR Abramovich, AI Michurin, AV Koroleva, LI
Citation
C. Marquina et al., Magnetovolume effect in the paramagnetic phase of Sm1-xSrxMnO3 (x=0.45, 0.33) compounds, J MAGN MAGN, 226, 2001, pp. 999-1001
Citations number
10
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN journal
03048853 → ACNP
Volume
226
Year of publication
2001
Part
1
Pages
999 - 1001
Database
ISI
SICI code
0304-8853(200105)226:<999:MEITPP>2.0.ZU;2-2
Abstract
Thermal expansion and magnetostriction measurements in high pulsed magnetic fields up to 13 T. have been performed on polycrystalline samples of the m ixed valence manganese oxides Sm1 - xSrxMnO3 (x = 0.45 and 0.33), from room temperature to 4.2K. In the case of Sm0.55Sr0.45MnO3, the large volume mag netostriction suggests that "magnetic polarons" formation is the origin of the colossal magnetoresistance observed in this compound. (C) 2001 Elsevier Science B.V. All rights reserved.