Magnetic excitations in charge-ordered Nd0.5Ca0.5MnO3: A Brillouin scattering study

Murugavel, P; Narayana, C; Sood, A  K; Parashar, S; Raju, A  R; Rao, C N R

dc.contributor.author	Murugavel, P
dc.contributor.author	Narayana, C
dc.contributor.author	Sood, A K
dc.contributor.author	Parashar, S
dc.contributor.author	Raju, A R
dc.contributor.author	Rao, C N R
dc.date.accessioned	2012-03-20T08:23:56Z
dc.date.available	2012-03-20T08:23:56Z
dc.date.issued	2000-11
dc.identifier	0295-5075	en_US
dc.identifier.citation	Europhysics Letters 52(4), 461-467 (2000)	en_US
dc.identifier.uri	https://libjncir.jncasr.ac.in/xmlui/10572/678
dc.description	Restricted Access	en_US
dc.description.abstract	Brillouin scattering studies on single crystals of a charge-ordered manganite, Nd0.5Ca0.5MnO3, have been carried out for the first time. The spectra show two modes at similar to 27 GHz (B-mode) and 60 GHz (S-mode). The B-mode frequency and intensity from 300 K to 27 K, covering both the charge ordering transition at 250 K and the antiferromagnetic transition, at 170 K, exactly follow the same temperature dependence as the d.c. magnetic susceptibility. The B-mode is associated With bulk magnetic excitations and the S-mode with surface magnetic excitations of the manganite with ferromagnetic correlations. The study is strongly indicative of the presence of ferromagnetic inhomogeneities in the charge-ordered as well as antiferromagnetic phases.	en_US
dc.description.uri	http://dx.doi.org/10.1209/epl/i2000-00460-0	en_US
dc.language.iso	en	en_US
dc.publisher	E D P Sciences	en_US
dc.rights	© 2000 E D P Sciences	en_US
dc.subject	Neutron-Scattering	en_US
dc.subject	Structural-Changes	en_US
dc.subject	Perovskites	en_US
dc.subject	La1-Xcaxmno3	en_US
dc.subject	Temperature	en_US
dc.subject	Phase	en_US
dc.title	Magnetic excitations in charge-ordered Nd0.5Ca0.5MnO3: A Brillouin scattering study	en_US
dc.type	Article	en_US