Browsing by Author "White, MA"
Now showing items 1-11 of 11
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Apparatus for dynamical thermal measurements of low-thermal diffusivity particulate materials at subambient temperatures
Murashov, VV; White, MA (1998-12)Apparatus for measurement of thermal diffusivity of particulate matter in the temperature range of 10-300 K is described. The basis of the measurement is modulated radial heat flow into a cylindrical sample, with a relatively ... -
Automated, low-temperature dielectric relaxation apparatus for measurement of air-sensitive, corrosive, hygroscopic, powdered samples
Bessonette, PWR; White, MA (1999-07)An automated apparatus for dielectric determinations on solid samples was designed to allow cryogenic measurements on air-sensitive, corrosive, hygroscopic, powdered samples, without determination of sample thickness, ... -
Dynamics of anions and cations in cesium hydrogensulfide (CsHS, CsDS): Neutron and x-ray diffraction, calorimetry and proton NMR investigations
Haarmann, F.; Jacobs, H.; Kockelmann, W.; Senker, J.; Muller, P.; Kennedy, CA; Marriott, RA; Qiu, L.; White, MA (2002-09)Protonated and deuterated samples of the hydrogensulfide of cesium were studied by high-resolution neutron powder diffraction, calorimetry and proton NMR investigations in a wide temperature range. Primarily due to ... -
High-throughput resistivity apparatus for thin-film combinatorial libraries
Hewitt, KC; Casey, PA; Sanderson, RJ; White, MA; Sun, R. (2005-09)An apparatus, capable of measuring the dc resistance versus temperature of a 49-member library prepared by thin-film deposition techniques was designed and tested. The library is deposited by dc magnetron sputtering onto ... -
Structural principles and amorphouslike thermal conductivity of Na-doped Si clathrates
Tse, JS; Uehara, K.; Rousseau, R.; Ker, A.; Ratcliffe, CI; White, MA; MacKay, G. (2000-07)The postulated low thermal conductivity and the possibility of altering the electronic conductivity of metal-doped clathrates with semiconducting host elements have stimulated great interest in exploring these compounds ... -
Structural principles and amorphouslike thermal conductivity of Na-doped Si clathrates (vol 85, pg 114, 2000)
Tse, JS; Uehara, K.; Rousseau, R.; Ker, A.; Ratcliffe, CI; White, MA; MacKay, G. (2001-05)No abstract available. -
Structure, thermal, and transport properties of the clathrates Sr8Zn8Ge38, Sr8Ga16Ge30, and Ba8Ga16Si30
Qiu, LY; Swainson, IP; Nolas, GS; White, MA (2004-07)The structural parameters, thermal properties, and transport properties of three type I clathrates, namely Sr8Zn8Ge38, Sr8Ga16Ge30, and Ba8Ga16Si30, have been determined at or below room temperature. The structural ... -
Thermal and lattice dynamical properties of Na8Si46 clathrate
Qiu, LY; White, MA; Li, ZQ; Tse, JS; Ratcliffe, CI; Tulk, CA; Dong, JJ; Sankey, OF (2001-07)The experimental heat capacity of Na8Si46 has been determined from 35-300 K, and its lattice parameters have been measured over the range 100-330 K. The experimental heat capacity and the thermal-expansion coefficient ... -
Thermal conductivity of an organic clathrate: Possible generality of glasslike thermal conductivity in crystalline molecular
Michalski, D.; White, MA (1997-04)No abstract available. -
Transport properties of Na8Si46
Nolas, GS; Ward, JM; Gryko, J.; Qiu, L.; White, MA (2001-10)We report on transport properties of polycrystalline Na8Si46 in the temperature range 10 to 300 K. The compound is a type I clathrate with Na incorporated into polyhedra formed by framework Si atoms. Seebeck coefficient ... -
Why is there no low-temperature phase transition in NaOH?
Bessonette, PWR; White, MA (1999-02)Although NaOH and NaOD exhibit parallel polymorphism at high temperatures, NaOD exhibits a low-temperature phase transition to a hydrogen-bonded antiferroelectric phase and no comparable transition has been found in NaOH. ...