Analysis of Gd₅(Si₂Ge₂) Microstructure and Phase Transition

Thesis/Dissertation · Tue Jan 01 00:00:00 EST 2002

DOI:https://doi.org/10.2172/803738· OSTI ID:803738

Meyers, John Scott ^[1]

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1. Iowa State Univ., Ames, IA (United States)

With the recent discovery of the giant magnetocaloric effect and the beginning of extensive research on the properties of Gd₅(Si_xGe_1-x)₄, a necessity has developed for a better understanding of the microstructure and crystal structure of this family of rare earth compounds with startling phenomenological properties. The aim of this research is to characterize the microstructure of the Gd₅(Si_xGe_1-x)₄, with X ≅ 2 and its phase change by using both transmission and electron microscopes. A brief history of past work on Gd₅(Si_xGe_1-x)₄ is necessary to understand this research in its proper context.

• Research Organization: Ames Lab., Ames, IA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: W-7405-Eng-82
• OSTI ID: 803738
• Report Number(s): IS-T 1927; TRN: US200302%%301
• Resource Relation: Other Information: TH: Thesis (M.S.); Submitted to Iowa State Univ., Ames, IA (US); PBD: 27 Jun 2002
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRYSTAL STRUCTURE
ELECTRON MICROSCOPES
MICROSTRUCTURE
RARE EARTH COMPOUNDS