Magnetic anisotropy in the ferromagnetic insulating state of La1-x Cax Mn O3

Likodimos, V; Pissas, M

dc.contributor.author	Likodimos, V	en
dc.contributor.author	Pissas, M	en
dc.date.accessioned	2014-03-01T01:24:35Z
dc.date.available	2014-03-01T01:24:35Z
dc.date.issued	2006	en
dc.identifier.issn	1098-0121	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17340
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	SINGLE-DOMAIN PARTICLES	en
dc.subject.other	NEUTRON-DIFFRACTION	en
dc.subject.other	PHASE-DIAGRAM	en
dc.subject.other	RESONANCE	en
dc.subject.other	TRANSITION	en
dc.subject.other	CRYSTALS	en
dc.subject.other	OXIDES	en
dc.subject.other	FIELD	en
dc.subject.other	SPIN	en
dc.title	Magnetic anisotropy in the ferromagnetic insulating state of La1-x Cax Mn O3	en
heal.type	journalArticle	en
heal.identifier.primary	10.1103/PhysRevB.73.214417	en
heal.identifier.secondary	http://dx.doi.org/10.1103/PhysRevB.73.214417	en
heal.identifier.secondary	214417	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	Ferromagnetic resonance (FMR) has been applied to study the variation of magnetic anisotropy and phase separation tendencies in the ferromagnetic insulating state of stoichiometric hole-doped La1-x Cax Mn O3 (0.125≤x≤0.19). A strongly anisotropic ferromagnetic phase is identified in the ferromagnetic insulating regime. The magnetic anisotropy evolves from positive uniaxial at x=0.125 and 0.15 to negative cubiclike at x=0.175 with increasing magnitude, whereas it decreases appreciably at x=0.19, which is close to the ferromagnetic metallic phase boundary. Minor contributions from ferromagnetic inhomogeneities characterized by weaker magnetic anisotropy are traced at low temperatures for x=0.125 and 0.15, while their temperature dependence implies coupling with the major anisotropic phase. A growing tendency towards the formation of spatially separate ferromagnetic regions in the paramagnetic regime is observed at x≥0.175, as the ferromagnetic metallic phase is approached. Persistent anomalies in the temperature dependence of the FMR parameters are traced concurrently with the structural transformation at 60-70 K. © 2006 The American Physical Society.	en
heal.publisher	AMERICAN PHYSICAL SOC	en
heal.journalName	Physical Review B - Condensed Matter and Materials Physics	en
dc.identifier.doi	10.1103/PhysRevB.73.214417	en
dc.identifier.isi	ISI:000238696200081	en
dc.identifier.volume	73	en
dc.identifier.issue	21	en