EPR AND MAGNETIC PROPERTIES ON LaCaMnO MAGNETIES

EPR AND MAGNETIC PROPERTIES ON LaCaMnO MAGNETIES

Electron paramagnetic resonance (EPR) and AC Susceptibility measurements were carried out as a function of temperature on La0,7Ca0,3MnO3 polycrystalline samples. The samples displayed a transition from paramagnetic-insulator to ferromagnetic-metal at Tc around 261K. Tc was determined from the invers...

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Main Authors: J. A. Olarte, A. Mariño
Format: Article
Language:English
Published: Universidad Nacional de Colombia 2008-01-01
Series:Momento
Subjects:
LaCaMnO manganites
EPR
a.c. susceptibility.
Online Access:https://revistas.unal.edu.co/index.php/momento/article/view/40430
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spelling doaj-1c1aaf090c3140bdbcc255931e93d7242020-11-24T21:14:42ZengUniversidad Nacional de ColombiaMomento0121-44702500-80132008-01-01036182534405EPR AND MAGNETIC PROPERTIES ON LaCaMnO MAGNETIESJ. A. Olarte0A. Mariño1Facultad Tecnológica, Universidad Distrital Francisco José de Caldas, Bogotá D.C.Facultad de Física, Universidad Nacional de Colombia, Bogotá D.C., ColombiaElectron paramagnetic resonance (EPR) and AC Susceptibility measurements were carried out as a function of temperature on La0,7Ca0,3MnO3 polycrystalline samples. The samples displayed a transition from paramagnetic-insulator to ferromagnetic-metal at Tc around 261K. Tc was determined from the inverse of the real part of a.c. susceptibility (1/X’) vs temperature, which follows a simple Curie-Weiss behavior. The inverse of the EPR intensity also follows a Curie-Weiss type behavior down toTEPR = 253 K.. The structure of the samples as determined by X-Ray diffraction (XRD) corresponds to a single perovskite phase with orthorhombic unit cell.https://revistas.unal.edu.co/index.php/momento/article/view/40430LaCaMnO manganitesEPRa.c. susceptibility.
collection DOAJ
language English
format Article
sources DOAJ
author J. A. Olarte
A. Mariño
spellingShingle J. A. Olarte
A. Mariño
EPR AND MAGNETIC PROPERTIES ON LaCaMnO MAGNETIES
Momento
LaCaMnO manganites
EPR
a.c. susceptibility.
author_facet J. A. Olarte
A. Mariño
author_sort J. A. Olarte
title EPR AND MAGNETIC PROPERTIES ON LaCaMnO MAGNETIES
title_short EPR AND MAGNETIC PROPERTIES ON LaCaMnO MAGNETIES
title_full EPR AND MAGNETIC PROPERTIES ON LaCaMnO MAGNETIES
title_fullStr EPR AND MAGNETIC PROPERTIES ON LaCaMnO MAGNETIES
title_full_unstemmed EPR AND MAGNETIC PROPERTIES ON LaCaMnO MAGNETIES
title_sort epr and magnetic properties on lacamno magneties
publisher Universidad Nacional de Colombia
series Momento
issn 0121-4470
2500-8013
publishDate 2008-01-01
description Electron paramagnetic resonance (EPR) and AC Susceptibility measurements were carried out as a function of temperature on La0,7Ca0,3MnO3 polycrystalline samples. The samples displayed a transition from paramagnetic-insulator to ferromagnetic-metal at Tc around 261K. Tc was determined from the inverse of the real part of a.c. susceptibility (1/X’) vs temperature, which follows a simple Curie-Weiss behavior. The inverse of the EPR intensity also follows a Curie-Weiss type behavior down toTEPR = 253 K.. The structure of the samples as determined by X-Ray diffraction (XRD) corresponds to a single perovskite phase with orthorhombic unit cell.
topic LaCaMnO manganites
EPR
a.c. susceptibility.
url https://revistas.unal.edu.co/index.php/momento/article/view/40430
work_keys_str_mv AT jaolarte eprandmagneticpropertiesonlacamnomagneties
AT amarino eprandmagneticpropertiesonlacamnomagneties
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