Local lattice distortions and Raman spectra in the La1-xCaxMnO3 system

Liarokapis, E; Leventouri, Th; Lampakis, D; Palles, D; Neumeier, JJ; Goodwin, DH

dc.contributor.author	Liarokapis, E	en
dc.contributor.author	Leventouri, Th	en
dc.contributor.author	Lampakis, D	en
dc.contributor.author	Palles, D	en
dc.contributor.author	Neumeier, JJ	en
dc.contributor.author	Goodwin, DH	en
dc.date.accessioned	2014-03-01T01:14:44Z
dc.date.available	2014-03-01T01:14:44Z
dc.date.issued	1999	en
dc.identifier.issn	0163-1829	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13217
dc.subject	Raman Spectra	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	MAGNETORESISTANCE	en
dc.subject.other	CHARGE	en
dc.title	Local lattice distortions and Raman spectra in the La1-xCaxMnO3 system	en
heal.type	journalArticle	en
heal.identifier.primary	10.1103/PhysRevB.60.12758	en
heal.identifier.secondary	http://dx.doi.org/10.1103/PhysRevB.60.12758	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	Raman spectra were measured for the full range of hole doping of the orthomanganites of the form La1-xCaxMnO3 (0 less than or equal to x less than or equal to 1) from ambient temperature to 75 K. Two high-frequency phonons that we assign to stretching modes of the oxygen atoms in the MnO6 octahedra soften below the transition temperature to ferromagnetic insulator and disappear at a temperature that depends on the Ca concentration. The correlation of their properties with the lattice distortions is examined. At room temperature, and for x similar to 0.35 and x similar to 0.70, phonons attributed to the relative rotations of the octahedra show a strong correlation with the octahedral distortion and the reported low-temperature modifications of the magnetic properties of these compounds. [S0163-1829(99)02342-5].	en
heal.publisher	AMERICAN PHYSICAL SOC	en
heal.journalName	Physical Review B - Condensed Matter and Materials Physics	en
dc.identifier.doi	10.1103/PhysRevB.60.12758	en
dc.identifier.isi	ISI:000083765400037	en
dc.identifier.volume	60	en
dc.identifier.issue	18	en
dc.identifier.spage	12758	en
dc.identifier.epage	12763	en