High temperature rare earth and Si-Ge thermoelectric materials

Technical Report · Thu Jan 21 00:00:00 EST 1993

OSTI ID:6761699

Han, Sang Hyun

This thesis consists of three papers. Paper 1 is concerned with the preparation of metastable crystalline high temperature polymorph of Dy[sub 2]S[sub 3] or metastable crystalline high pressure polymorphs of R[sub 2]S[sub 3] (R = Y, Er, Tm, Yb and Lu) by mechanical milling. In Paper II, copper doped dysprosium sesquisulfide compounds, which have the [eta]-orthorhombic structure, were examined as potential high temperature thermoelectric materials. Paper III deals with the use of mechanical alloying and gaseous state diffusion to extend the electrical activity of phosphorus above the maximum reported equilibrium limit in Si[sub 80]Ge[sub 20] alloys.

• Research Organization: Ames Lab., IA (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6761699
• Report Number(s): IS-T-1636; ON: DE93006913
• Resource Relation: Other Information: Thesis (Ph.D.)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DYSPROSIUM SULFIDES
CRYSTAL STRUCTURE
MILLING
THERMOELECTRIC PROPERTIES
ERBIUM SULFIDES
GERMANIUM ALLOYS
ELECTRICAL PROPERTIES
LUTETIUM SULFIDES
SILICON ALLOYS
THULIUM SULFIDES
YTTERBIUM SULFIDES
YTTRIUM SULFIDES
COPPER ADDITIONS
DOPED MATERIALS
ELECTRON DENSITY
EXPERIMENTAL DATA
LATTICE PARAMETERS
PHOSPHORUS ADDITIONS
X-RAY DIFFRACTION
ALLOYS
CHALCOGENIDES
COHERENT SCATTERING
COPPER ALLOYS
DATA
DIFFRACTION
DYSPROSIUM COMPOUNDS
ERBIUM COMPOUNDS
INFORMATION
LUTETIUM COMPOUNDS
MACHINING
MATERIALS
NUMERICAL DATA
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SCATTERING
SULFIDES
SULFUR COMPOUNDS
THULIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTERBIUM COMPOUNDS
YTTRIUM COMPOUNDS
360602* - Other Materials- Structure & Phase Studies
360606 - Other Materials- Physical Properties- (1992-)
360104 - Metals & Alloys- Physical Properties