THEORY OF COLOSSAL MAGNETORESISTIVE PEROVSKITE MANGANITES

دانشگاه آزاد اسلامی اصفهان(خوراسگان)

منو

رکورد قبلی

رکورد بعدی

" THEORY OF COLOSSAL MAGNETORESISTIVE PEROVSKITE MANGANITES "

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	151692
Doc. No	:	ET23484
Main Entry	:	Ken Keunhyuk Ahn
Title Proper	:	THEORY OF COLOSSAL MAGNETORESISTIVE PEROVSKITE MANGANITES
Note	:	This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract	:	In this dissertation, the interrelationship of electron motion, magnetic order, andlattice distortion in perovs kite manganites is studied theoretically.First, a model of localized classical electrons coupled to lattice degrees of freedomand to each other via the Coulomb interaction is studied to gain insight into thecharge and orbital ordering observed in lightly doped perovskite manganites. Explicitexpressions are obtained for the minimum energy and ionic displacements caused bygiven hole and electron orbital configurations. These expressions are analyzed forseveral hole configurations, including the one experimentally observed by Yamadaet al. in La7/sSrl/8Mn03. We find that, although the preferred charge and orbitalordering depends sensitively on parameters, there are ranges of the parameters inwhich the experimentally observed hole configuration has the lowest energy. Forthese parameter values we also find that......-....,....-...,..tested for theQ1 PC1 bus cardBoth these projects mere sofixare des elopment efforts tonards contributing to dlfferentaspects of Roboucs and lZ1echatronics projects m the Controls and Roboucs Group..
Subject	:	Electericl tess
	:	برق
electronic file name	:	TL46725.pdf
Title and statement of responsibility and	:	THEORY OF COLOSSAL MAGNETORESISTIVE PEROVSKITE MANGANITES [Thesis]