Anomalous sound velocity behavior of La1-xCaxMnO3 (X∼0.48) in applied field

The sound velocity vs(T) has been investigated for La1-XCaXMnO3 (0.46X0.50) in applied fields up to . The characteristic vs(T) softening and the subsequent hardening are observed below the ferromagnetic transition temperature Tc. The gradual vs(T) softening above the charge-order (CO) transition tem...

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Veröffentlicht in:	Physica. B, Condensed matter Condensed matter, 2006-05, Vol.378-80, p.518-519
Hauptverfasser:	FUJISHIRO, Hiroyuki, IKEBE, Manabu, KIKUCHI, Tsutomu, FUKASE, Tetsuo
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Magnetic properties and materials Magnetotransport phenomena, materials for magnetotransport Manganites Physics
Online-Zugang:	Volltext
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Zusammenfassung:	The sound velocity vs(T) has been investigated for La1-XCaXMnO3 (0.46X0.50) in applied fields up to . The characteristic vs(T) softening and the subsequent hardening are observed below the ferromagnetic transition temperature Tc. The gradual vs(T) softening above the charge-order (CO) transition temperature TCO and the vs(T) hardening just below TCO are also observable. The vs(T) softening above TCO is at first enhanced and then reduced with increasing applied field. These results can be understood on the basis of the enhanced spin-lattice and charge-lattice interaction.
ISSN:	0921-4526 1873-2135
DOI:	10.1016/j.physb.2006.01.235