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Field Dependent Specific Heat Capacity of Mn 2—x Cr x Sb Single Crystals
Author(s) -
Engelhardt J.,
AsenPalmer M.,
Kleeberg Ch.,
Annaorazov M.,
Kattwinkel A.,
Bärner K.,
Gmelin E.
Publication year - 1999
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/(sici)1521-3951(199902)211:2<789::aid-pssb789>3.0.co;2-j
Subject(s) - tetragonal crystal system , heat capacity , condensed matter physics , hexagonal crystal system , ferromagnetism , single crystal , materials science , specific heat , magnetic field , entropy (arrow of time) , crystallography , thermodynamics , crystal structure , chemistry , physics , quantum mechanics
The specific heat capacity versus temperature (80 K < T < 350 K) curves of three Mn 2— x Cr x Sb single crystals ( x = 0.10, 0.05, 0.03) have been measured at different magnetic fields (0 < B < 13 T) and along the crystal directions a , c of the tetragonal lattice. Values of the entropy steps Δ S are reported as well as the magnetic field shifts of T s along the tetragonal crystal directions. The data are correlated in terms of the TPT model. Frozen‐in spin entropy contributions are observed also and are related to interfacial strains which arise along the boundaries of the matrix and the ferromagnetic hexagonal secondary phase Mn 1.07 Cr 0.11 Sb, which precipitates along the [101] planes of the tetragonal matrix.