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CMP
Credit: Jack Hobhouse

Professor John Gregg

Fellow & Tutor in Physics

Research theme

  • Quantum materials

Sub department

  • Condensed Matter Physics

Research groups

  • Spintronics
John.Gregg@physics.ox.ac.uk
  • About
  • Research
  • Current projects
  • Publications

Thermal conductivity of a giant magnetoresistive mechanical alloy

J MAGN MAGN MATER 140 (1995) 493-494

Authors:

D DANIEL, JF GREGG, SM THOMPSON, JMD COEY, A FAGAN, K OUNADJELA, C FERMON, G SAUX

Abstract:

We report correlated measurements of magnetothermal and magnetoelectric conductivities in a cobalt-silver mechanical alloy. Their variation with magnetisation indicates that their respective relaxation times have similar origins. At low temperatures the thermal and electric conductivities are similar; however at higher temperatures an increasing phonon contribution reduces the magnetothermal effect.
More details from the publisher

A phase shift in the coupling in Co/sub 1-x/Ag/sub x/Cu/Co/sub 1-x/Ag/sub x/ systems

IEEE Transactions on Magnetics Institute of Electrical and Electronics Engineers (IEEE) 31:6 (1995) 3924-3926

Authors:

L Zhou, PE Wigen, RL Stamps, Z Zhang, K Ounadjela, M Hehn, J Gregg
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GIANT MAGNETORESISTANCE IN METASTABLE ALLOYS PREPARED BY PLASMAS SPUTTERING AND MECHANICAL ALLOYING

FIZIKA METALLOV I METALLOVEDENIE 79:1 (1995) 88-97

Authors:

SM THOMPSON, JF GREGG, D DANIEL, K UNADIELA
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GIANT MAGNETORESISTANCE AND INDUCED EXCHANGE-ANISOTROPY IN MECHANICALLY ALLOYED CO30AG70

J APPL PHYS 75:10 (1994) 6921-6923

Authors:

K OUNADJELA, A HERR, R POINSOT, JMD COEY, A FAGAN, CR STADDON, D DANIEL, JF GREGG, SM THOMPSON, K OGRADY, S GRIEVES
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MAGNETIC-INTERACTIONS IN GIANT MAGNETORESISTIVE CO-AG HETEROGENEOUS FILMS

IEEE T MAGN 30:2 (1994) 726-728

Authors:

SM THOMPSON, JF GREGG, SJ DAWSON, CR STADDON, K OUNADJELA, J HAMMANN, C FERMON
More details from the publisher
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