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EPR in La 1 - x Ca x MnO 3 : Relaxation and bottleneck

EPR in La 1 - x Ca x MnO 3 : Relaxation and bottleneck Recent EPR and susceptibility measurements in La 1 - x Ca x MnO 3 support the existence of a bottleneck EPR regime up to 1000 K quantitatively. The EPR linewidth and electrical conductivity follow the same temperature dependence in the range of 250 to 650 K predicted by the small polaron hopping model. This indicates that spin-lattice relaxation in manganates is due to the relaxation of spins of e g Jahn-Teller polarons to the lattice. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

EPR in La 1 - x Ca x MnO 3 : Relaxation and bottleneck

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Publisher
American Physical Society (APS)
Copyright
Copyright © 2000 The American Physical Society
ISSN
1095-3795
DOI
10.1103/PhysRevB.61.5888
Publisher site
See Article on Publisher Site

Abstract

Recent EPR and susceptibility measurements in La 1 - x Ca x MnO 3 support the existence of a bottleneck EPR regime up to 1000 K quantitatively. The EPR linewidth and electrical conductivity follow the same temperature dependence in the range of 250 to 650 K predicted by the small polaron hopping model. This indicates that spin-lattice relaxation in manganates is due to the relaxation of spins of e g Jahn-Teller polarons to the lattice.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Mar 1, 2000

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