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  1. No Access

    Article

    NMR and EPR Study of Sn0.98 Gd0. 02 Te at Low Temperatures.

    Magnetic resonance behavior of Sn0.98 Gd0. 02 Te has been investigated from 2.5 K down to 0.015 K using a SQUID magnetometer and a 3He-4He dilution refrigerator. Detection of magnetic resonance with a SQUID allow...

    B. S. Han, O. G. Symko, D. J. Zheng, F. T. Hedgcock in MRS Online Proceedings Library (1986)

  2. No Access

    Article

    EPR of Mn2+ and Gd3+ Ions in PbTe and SnTe Semiconductors

    The EPR spectra of manganese and gadolinium doped PbTe and SnTe semiconductors were measured from 4.2K up to 400K for dopant concentrations ranging from 50 to 50000 ppm. Resolved fine, hyperfine and superhyper...

    Marian Bartkowski, D. J. Northcott, A. H. Reddoch… in MRS Online Proceedings Library (1986)

  3. No Access

    Article

    Anisotropy of the low temperature resistivity of hexagonal single crystalline spin glass systems

    The impurity contribution to the resistivity in zero field Δρ(T) of dilute hexagonal single crystals of ZnMn, CdMn and MgMn has been studied in the mK range on samples cut parallel (‖) and perpendicular (⊥) to th...

    H. Albrecht, H. Meierling, E. F. Wassermann… in Zeitschrift für Physik B Condensed Matter (1982)

  4. No Access

    Chapter

    Magnetic Anisotropy in Dilute Magnesium Manganese Alloys

    The paramagnetic anisotropy in single magnesium crystals containing 80, 175 and 315 p.p.m. manganese has been measured over a temperature range 300 to 1.6°K. There is observed in the paramagnetic anisotropy a ...

    J. L. Benchimol, F. T. Hedgcock… in Crystal Field Effects in Metals and Alloys (1977)

  5. No Access

    Chapter and Conference Paper

    Magnetic Scattering in Dilute Metals

    Recently, Toyozawa1 has presented a theory for the experimentally observed negative magnetoresistance in heavily doped semiconductors exhibiting metallic impurity conduction.2,3 This theory requires a localized s...

    F. T. Hedgcock, D. Mathur in Low Temperature Physics LT9 (1965)

  6. No Access

    Chapter and Conference Paper

    Magnetic Scattering in Dilute Metals

    The observance of negative magnetoresistance at low temperatures in heavily doped n-type germanium, exhibiting metallic conductivity, was first reported by Sasaki et al. 1 at the 1960 Prague Semic...

    F. T. Hedgcock, D. P. Mathur in Low Temperature Physics LT9 (1965)

  7. No Access

    Chapter and Conference Paper

    de Haas van Alphen Effect in Zinc Manganese Alloys

    Observations of the long period de Haas van Alphen effect in pure zinc and in a zinc alloy containing 0.01 at.% manganese have been made to determine whether the Fermi surface of the alloy changes in the tempe...

    F. T. Hedgcock, W. B. Muir in Proceedings of the Seventh Conference on M… (1962)

  8. No Access

    Article

    Tensile Strength of Liquid Nitrogen

    SEVERAL authors1 have suggested that included gases have an appreciable effect in lowering the observed tensile strength of a liquid. For this reason it was decided to attempt to measure the tensile strength of a...

    A. D. MISENER, F. T. HEDGCOCK in Nature (1953)