Doctoral Dissertations

Title

Magnetic studies of novel mixed rare earth-iron rich R₂T₁₇ intermetallics

Alternative Title

Magnetic studies of novel mixed rare earth iron rich R₂T₁₇ intermetallics

Keywords and Phrases

2:17 systems; 2:17 rhombohedral; 2:17 hexagonal; 2:17 disordered rhombohedral

Abstract

"The modern families of high performance permanent magnets are based on combinations of transition metals (Fe and Co) and rare earths. In general, the transition metal provides high Curie temperature and saturation moment, while the rare earth is responsible for a large uniaxial anisotropy resulting in good coercivity in the final magnet. R₂TM₁₇ (R = rare earth, TM = transition metal) crystallize either in the hexagonal Th₂Ni₁₇-type structure with heavy rare earth elements or in the rhombohedral Th₂Zn₁₇-type structure with light rare earth elements. The hexagonal structure supports appreciable deviation from the ideal 2:17 stoichiometry and in practice is realized only in disordered (DH) phase. In this thesis we present our results on the mixed rare earth 2:17 systems that reveal the existence of a disorder in the rhombohedral phase (DR)."--Abstract, page iv.

Department(s)

Physics

Degree Name

Ph. D. in Physics

Publisher

University of Missouri--Rolla

Publication Date

Fall 2003

Pagination

xii, 157 leaves

Note about bibliography

Includes bibliographical references.

Rights

© 2003 Kishore Kamaraju, All rights reserved.

Document Type

Dissertation - Citation

File Type

text

Language

English

Library of Congress Subject Headings

Intermetallic compounds
Rare earth metals -- Magnetic properties
Transition metals -- Magnetic properties

Thesis Number

T 8367

Print OCLC #

56351719

Link to Catalog Record

Full-text not available: Request this publication directly from Missouri S&T Library or contact your local library.

http://laurel.lso.missouri.edu/record=b5118606~S5

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