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Baric and temperature dependences of kinetic coefficients in p‐Cd 0.7 Mn 0.3 GeAs 2 at atmospheric and high pressures
Author(s) -
Mollaev A. Yu.,
Kamilov I. K.,
Arslanov R. K.,
Zalibekov U. Z.,
Arslanov T. R.,
Bashirov R. R.,
Novotorzev V. M.,
Marenkin S. F.
Publication year - 2009
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200880514
Subject(s) - magnetoresistance , electrical resistivity and conductivity , atmospheric pressure , hysteresis , atmospheric temperature range , analytical chemistry (journal) , chemistry , kinetic energy , hall effect , doping , conductivity , temperature coefficient , condensed matter physics , materials science , thermodynamics , physics , magnetic field , meteorology , environmental chemistry , composite material , quantum mechanics
The pressure dependences of the resistivity ρ ( P ) and Hall coefficient R ρ ( P ) have been measured for heavily doped Cd 0.7 Mn 0.3 GeAs 2 at increasing and decreasing pressure at room temperature. To investigate temperature properties of conductivity in Cd 0.7 Mn 0.3 GeAs 2 , the temperature dependences ρ ( T ) and R ρ ( T ) have been defined in the temperature range 77–450 K at atmospheric pressure. The pioneering measurements of magnetoresistance Δ ρ xx ( H , P )/ ρ 0 ( P ) in Cd 0.7 Mn 0.3 GeAs 2 are presented. A hysteresis of magnetoresistive effect has been found when pressure rises and falls. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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