Doctoral Dissertations

Structural, magnetic and electric transport properties of metal substituted La₀.₇Sr₀.₃MnO₃

Minseob Kim

Abstract

"In order to understand the structural related magnetic and transport properties of substituted perovskites La₀.₇Sr₀.₃MnO₃ (LSMO), we studied th effects of replacing some of the Mn with Ti, Zr, and Cu atoms. The structural, magnetic and electrical phase transitions and transport properties of these compounds were investigated by neutron diffraction, magnetization, electric resistivity, and in addition for Cu, theoretical band structure calculations. These abnormal behaviors relative to the parent manganite perovskite are explained by the competition between the double exchange and super exchange interactions, local John-Teller distortion, the dilution of magnetic ordering by the formation of AF clusters, the change of electron carrier density and band structure, and complex interactions between electrons, phonons, and polarons"--Abstract, page iv.

Advisor(s)

Parris, Paul Ernest, 1954-
James, William Joseph

Committee Member(s)

Yelon, William B.
Peacher, Jerry
Pringle, Oran Allan

Department(s)

Physics

Degree Name

Ph. D. in Physics

Publisher

University of Missouri--Rolla

Publication Date

Spring 2006

Journal article titles appearing in thesis/dissertation

  • Structural, magnetic and electric transport properties of metal substituted Lanthanum Strontium Manganese Oxides
  • Structure, magnetic and transport properties of Ti-substitutedLa₀.₇Sr₀.₃MnO₃
  • Structural, magnetic and transport properties of Zr-substituted La₀.₇Sr₀.₃MnO₃
  • Effect of Cu-doping on the magnetic and transport properties of La₀.₇Sr₀.₃MnO₃
  • Electronic structure of La₀.₇Sr₀.₃Mn₁₋ₓCuₓO₃ (0.0 ≤ x ≤ 0.30)
  • Comparative properties of substituted manganite perovskite

Pagination

xvi, 143 pages

Note about bibliography

Includes bibliographical references.

Rights

© 2006 Minseob Kim, All rights reserved.

Document Type

Dissertation - Citation

File Type

text

Language

English

Subject Headings

MagnetoresistanceManganiteNeutrons -- DiffractionPerovskite

Thesis Number

T 8994

Print OCLC #

123129451

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