Browsing White, Mary Anne by Title

Now showing items 1-20 of 45

  • Apparatus for dynamical thermal measurements of low-thermal diffusivity particulate materials at subambient temperatures 

    Murashov, VV, and MA White. 1998. "Apparatus for dynamical thermal measurements of low-thermal diffusivity particulate materials at subambient temperatures." Review of Scientific Instruments 69(12): 4198-4204.
    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, and MA White. 1999. "Automated, low-temperature dielectric relaxation apparatus for measurement of air-sensitive, corrosive, hygroscopic, powdered samples." Review of Scientific Instruments 70(7): 3113-3114.
    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, ...

  • Automated, small sample-size adiabatic calorimeter. 

    Van Oort, Michiel J. M., and Mary Anne White. 1987. "Automated, small sample-size adiabatic calorimeter.." Review of Scientific Instruments 58(7): 1239-1241.
    An automated adiabatic calorimeter is described with an internal vol. of 5 cm3, operable at 30-380 K. One of the main advantages of this calorimeter over others in use is the shorter down time during sample changes, due ...

  • A calorimetric investigation of the low-temperature phase transition in sodium hydroxide-d. 

    Reproduced from White, Mary Anne, and Stanley A. Moore. 1986. "A calorimetric investigation of the low-temperature phase transition in sodium hydroxide-d.." Journal of Chemical Physics 85(8): 4629-4632, with the permission of AIP Publishing.
    The heat capacity of NaOD from 20 to 350 K is reported. An anomaly centered at 153.2 ± 0.1 K (?H = 131.1 ± 0.7 J/mol, ?S = 0.864 ± 0.005 J/K.mol) corresponds to the onset of a low-temp. antiferroelec. phase. This ...

  • Calorimetric, Spectroscopic, and Structural Studies of Anhydrous Zinc Bromide 

    Reproduced from WHITE, MA, C. CHIEH, A. ANDERSON, and LAK STAVELEY. 1984. "Calorimetric, Spectroscopic, and Structural Studies of Anhydrous Zinc Bromide." Journal of Chemical Physics 80(3): 1254-1258, with the permission of AIP Publishing.
    No abstract available.

  • Characterization of the Incommensurate Phase of [P(CH3)4]2CuCl4 

    PRESSPRICH, MR, MR BOND, RD WILLETT, and MA WHITE. 1989. "Characterization of the Incommensurate Phase of [P(CH3)4]2CuCl4." Physical Review B 39(5): 3453-3456. Copyright © 1989 American Physical Society.
    No abstract available.

  • Deductions about the Structure of Phase-Iii from Thermodynamic Measurements on Solid Isotopic Methanes 

    Reproduced from WHITE, MA, and JA MORRISON. 1979. "Deductions about the Structure of Phase-Iii from Thermodynamic Measurements on Solid Isotopic Methanes." Journal of Chemical Physics 70(12): 5384-5390, with the permission of AIP Publishing.
    No abstract available.

  • Dynamics of anions and cations in cesium hydrogensulfide (CsHS, CsDS): Neutron and x-ray diffraction, calorimetry and proton NMR investigations 

    Reproduced from Haarmann, F., H. Jacobs, W. Kockelmann, J. Senker, et al. 2002. "Dynamics of anions and cations in cesium hydrogensulfide (CsHS, CsDS): Neutron and x-ray diffraction, calorimetry and proton NMR investigations." Journal of Chemical Physics 117(10): 4961-4972, with the permission of AIP Publishing.
    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 ...

  • Energetics of Long Alkyl Chains Embedded in a Crystalline Matrix - (Normal-C18h37nh3)2cdcl4 

    Reproduced from WHITE, MA. 1984. "Energetics of Long Alkyl Chains Embedded in a Crystalline Matrix - (Normal-C18h37nh3)2cdcl4." Journal of Chemical Physics 81(12): 6100-6105, with the permission of AIP Publishing.
    No abstract available.

  • Heat capacity of gadolinium near the Curie temperature. 

    Bednarz, Grzegorz, D. J. W. Geldart, and Mary Anne White. 1993. "Heat capacity of gadolinium near the Curie temperature.." Physical Review B: Condensed Matter and Materials Physics 47(21): 14247-14259. Copyright © 1993 American Physical Society.
    High-resoln. ac calorimetric data near the Curie point are reported for several single crystals of gadolinium. The crit. temp. and the shape of the heat-capacity curve near Tc both depend on the sample-prepn. procedure, ...

  • Heat capacity, lattice dynamics, and thermodynamic stability of the negative thermal expansion material HfMo2O8 

    Kennedy, Catherine A., Mary Anne White, Angus P. Wilkinson, and Tamas Varga. 2007. "Heat capacity, lattice dynamics, and thermodynamic stability of the negative thermal expansion material HfMo2O8." Physical Review B 75(22): 224302-224302. Copyright © 2007 American Physical Society.
    We explore the lattice dynamics of the negative thermal expansion material, cubic HfMo2O8, through analysis of its heat capacity (measured from 0.5 to 300 K) and its room-temperature Raman spectrum. Its heat capacity is ...

  • High-resolution, high-sensitive ac calorimeter. 

    Bednarz, Grzegorz, Brian Millier, and Mary Anne White. 1992. "High-resolution, high-sensitive ac calorimeter.." Review of Scientific Instruments 63(8): 3944-3952.
    A high-resoln., high-sensitivity, automated ac calorimeter capable of heat capacity measurements of very small samples (m < 20 mg) with a temp. resoln. of a few mK in the ac mode is described. This calorimeter also can be ...

  • High-throughput resistivity apparatus for thin-film combinatorial libraries 

    Hewitt, KC, PA Casey, RJ Sanderson, MA White, et al. 2005. "High-throughput resistivity apparatus for thin-film combinatorial libraries." Review of Scientific Instruments 76(9): 093906-093906.
    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 ...

  • Investigation of factors affecting crystallization of cyclopentane clathrate hydrate 

    Reproduced from Whitman, Catherine A., Roman Mysyk, and Mary Anne White. 2008. "Investigation of factors affecting crystallization of cyclopentane clathrate hydrate." Journal of Chemical Physics 129(17): 174502-174502, with the permission of AIP Publishing.
    We report the results of systematic investigations of the influence of thermal history and other factors on crystallization of a model clathrate hydrate (cyclopentane hydrate) studied as water-in-oil and oil-in-water ...

  • Low thermal conductivity of the negative thermal expansion material, HfMo2O8 

    Kennedy, Catherine A., Mary Anne White, Angus P. Wilkinson, and Tamas Varga. 2007. "Low thermal conductivity of the negative thermal expansion material, HfMo2O8." Applied Physics Letters 90(15): 151906-151906.
    The thermal conductivity of the cubic polymorph of hafnium molybdate, HfMo2O8, was determined over the temperature range of 2-400 K. The values of thermal conductivity were low (0.64 +/- 0.15 W m(-1) K-1 at T=300 K for a ...

  • The nature of ammonium ion disorder in ammonium tetrafluoroaluminate, NH4AlF4. 

    Reproduced from White, Mary Anne, and Brian D. Wagner. 1985. "The nature of ammonium ion disorder in ammonium tetrafluoroaluminate, NH4AlF4.." Journal of Chemical Physics 83(11): 5844-5848, with the permission of AIP Publishing.
    To clarify previous conflicting reports concerning the existence of an order-disorder phase transition in NH4AlF4 at T ?150 K, the heat capacity of this compd. was measured from T = 15 to 305 K, by adiabatic calorimetry. ...

  • Neutron-Scattering Spectra from the Hindered Rotation of Methane in Methane + Krypton Mixtures Adsorbed on Graphite 

    ALLEN, MP, CB HOVENDEN, RP HUMES, SK METHA, et al. 1985. "Neutron-Scattering Spectra from the Hindered Rotation of Methane in Methane + Krypton Mixtures Adsorbed on Graphite." Faraday discussions 80: 171-182.
    No abstract available.

  • Orientational Ordering and Tunneling States in Solid CH2D2 as Deduced from Low-Temperature Heat-Capacity and Neutron Cross-Section Measurements 

    Reproduced from WHITE, MA, KJ LUSHINGTON, and JA MORRISON. 1978. "Orientational Ordering and Tunneling States in Solid CH2D2 as Deduced from Low-Temperature Heat-Capacity and Neutron Cross-Section Measurements." Journal of Chemical Physics 69(9): 4227-4233, with the permission of AIP Publishing.
    No abstract available.

  • Phase transitions in M(ClO4)2.6H2O (M = magnesium, zinc). Investigations by adiabatic calorimetry and infrared spectroscopy. 

    Reproduced from White, Mary Anne, and Michael Falk. 1986. "Phase transitions in M(ClO4)2.6H2O (M = magnesium, zinc). Investigations by adiabatic calorimetry and infrared spectroscopy.." Journal of Chemical Physics 84(6): 3484-3490, with the permission of AIP Publishing.
    IR spectra of Mg(ClO4)2.6H2O at 10 K indicate a complex structure contg. at least 16 distinct types of H2O protons. At 107.9 K this structure transforms sharply to a much simpler disordered form (?Strans = 7.754 J K-1 ...

  • Phase transitions in metal perchlorate hydrates: the supposed hydrate-to-pseudohydrate transformations. 

    Reproduced from Falk, Michael, Ping F. Seto, and Mary Anne White. 1984. "Phase transitions in metal perchlorate hydrates: the supposed hydrate-to-pseudohydrate transformations.." Journal of Chemical Physics 81(8): 3752-3753, with the permission of AIP Publishing.
    A polemic. The hydrate-to-pseudohydrate transformations in metal perchlorate hydrates reported by M. B. Patel and H. D. Brist (ibid. 1983, 79, 4489) and Solid State Commun. (48, 139 (1983)) as well as the suggested ...