Mössbauer study of 1%57Fe doped ferromagnetic insulator La0.825Ca0.175MnO3

Pissas, M; Papavassiliou, G; Devlin, E; Simopoulos, A; Likodimos, V

dc.contributor.author	Pissas, M	en
dc.contributor.author	Papavassiliou, G	en
dc.contributor.author	Devlin, E	en
dc.contributor.author	Simopoulos, A	en
dc.contributor.author	Likodimos, V	en
dc.date.accessioned	2014-03-01T01:54:28Z
dc.date.available	2014-03-01T01:54:28Z
dc.date.issued	2005	en
dc.identifier.issn	14346028	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/27400
dc.subject.other	Anisotropy	en
dc.subject.other	Doping (additives)	en
dc.subject.other	Ferromagnetic materials	en
dc.subject.other	Iron compounds	en
dc.subject.other	Magnetization	en
dc.subject.other	Mossbauer spectroscopy	en
dc.subject.other	Resonance	en
dc.subject.other	Stoichiometry	en
dc.subject.other	Ferromagnetic insulating	en
dc.subject.other	Inert atmosphere	en
dc.subject.other	Magnetization measurements	en
dc.subject.other	Orbital rearrangement	en
dc.subject.other	Lanthanum compounds	en
dc.title	Mössbauer study of 1%57Fe doped ferromagnetic insulator La0.825Ca0.175MnO3	en
heal.type	journalArticle	en
heal.identifier.primary	10.1140/epjb/e2005-00311-4	en
heal.identifier.secondary	http://dx.doi.org/10.1140/epjb/e2005-00311-4	en
heal.publicationDate	2005	en
heal.abstract	We have employed magnetization measurements, Mössbauer and ESR spectroscopic techniques, in order to study the ferromagnetic insulating (FMI) compound La1-xCaxMnO3 (x=0.175) doped with 1%57Fe. We have used two samples; one prepared in air which has cation vacancies and a second in inert atmosphere, which is stoichiometric. An abrupt change of the experimental results is obtained, by all techniques, in the ferromagnetic insulating regime, in the temperature region of TO/O//≈60 K, where an orbital rearrangement is suggested to occur. An analysis of these findings points to an orbital rearrangement transformation. Ferromagnetic resonance reveals considerable differences between stoichiometric and cation deficient samples, indicating anisotropy of the exchange interactions in the former sample with significant temperature dependence, most pronounced in the vicinity of TO/O//. © EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2005.	en
heal.journalName	European Physical Journal B	en
dc.identifier.doi	10.1140/epjb/e2005-00311-4	en
dc.identifier.volume	47	en
dc.identifier.issue	2	en
dc.identifier.spage	221	en
dc.identifier.epage	229	en