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Title: Experiments with phase transitions at very high pressure. Final Report

Abstract

Diamond cells were constructed for use to 1 Mbar. A refrigerator for cooling diamond cells was adapted for studies between 15 and 300 K. A cryostat for superconductivity studies between 1.5 to 300 K was constructed. Optical equipment was constructed for fluorescence, transmission, and reflectance studies. X-ray equipment was adapted for use with diamond cells. Experimental techniques were developed for X-ray diffraction studies using synchrotron radiation. AC susceptibility techniques were developed for detecting superconducting transitions. The following materials were studied: compressed solidified gases (Xe, Ar), semiconductors (Ge, Si, GaAs), superconductors (Nb/sub 3/Ge, Nb/sub 3/Si, Nb/sub 3/As, CuCl), molecular crystals (I).

Authors:
Publication Date:
Research Org.:
Colorado State Univ., Fort Collins (USA)
OSTI Identifier:
5641986
Report Number(s):
N-8327879; NASA-CR-3696; E-1513
TRN: 83-026751
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ARGON; PHASE TRANSFORMATIONS; COPPER CHLORIDES; GALLIUM ARSENIDES; GERMANIUM; GERMANIUM ALLOYS; IODINE; NIOBIUM ARSENIDES; NIOBIUM BASE ALLOYS; NIOBIUM SILICIDES; SILICON; XENON; CRYOSTATS; CRYSTALS; HIGH PRESSURE; LOW TEMPERATURE; MEDIUM TEMPERATURE; OPTICAL PROPERTIES; PRESSURE MEASUREMENT; SEMICONDUCTOR MATERIALS; SUPERCONDUCTORS; SYNCHROTRON RADIATION; ULTRALOW TEMPERATURE; VERY LOW TEMPERATURE; X-RAY DIFFRACTION; ALLOYS; ARSENIC COMPOUNDS; ARSENIDES; BREMSSTRAHLUNG; CHLORIDES; CHLORINE COMPOUNDS; COHERENT SCATTERING; CONTROL EQUIPMENT; COPPER COMPOUNDS; COPPER HALIDES; DIFFRACTION; ELECTROMAGNETIC RADIATION; ELEMENTS; EQUIPMENT; FLUIDS; GALLIUM COMPOUNDS; GASES; HALIDES; HALOGEN COMPOUNDS; HALOGENS; MATERIALS; METALS; NIOBIUM ALLOYS; NIOBIUM COMPOUNDS; NONMETALS; PHYSICAL PROPERTIES; PNICTIDES; RADIATIONS; RARE GASES; SCATTERING; SEMIMETALS; SILICIDES; SILICON COMPOUNDS; THERMOSTATS; TRANSITION ELEMENT COMPOUNDS; 360602* - Other Materials- Structure & Phase Studies

Citation Formats

Spain, I L. Experiments with phase transitions at very high pressure. Final Report. United States: N. p., 1983. Web.
Spain, I L. Experiments with phase transitions at very high pressure. Final Report. United States.
Spain, I L. 1983. "Experiments with phase transitions at very high pressure. Final Report". United States.
@article{osti_5641986,
title = {Experiments with phase transitions at very high pressure. Final Report},
author = {Spain, I L},
abstractNote = {Diamond cells were constructed for use to 1 Mbar. A refrigerator for cooling diamond cells was adapted for studies between 15 and 300 K. A cryostat for superconductivity studies between 1.5 to 300 K was constructed. Optical equipment was constructed for fluorescence, transmission, and reflectance studies. X-ray equipment was adapted for use with diamond cells. Experimental techniques were developed for X-ray diffraction studies using synchrotron radiation. AC susceptibility techniques were developed for detecting superconducting transitions. The following materials were studied: compressed solidified gases (Xe, Ar), semiconductors (Ge, Si, GaAs), superconductors (Nb/sub 3/Ge, Nb/sub 3/Si, Nb/sub 3/As, CuCl), molecular crystals (I).},
doi = {},
url = {https://www.osti.gov/biblio/5641986}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jun 01 00:00:00 EDT 1983},
month = {Wed Jun 01 00:00:00 EDT 1983}
}

Technical Report:
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