Low Temperature magnetic properties of GdCoIn5
Betancourth
D
author
Facio
J
I
author
Pedrazzini
P
author
Jesus
C
B
R
author
Pagliuso
P
G
author
Vildosola
V
author
Cornaglia
P
S
author
García
D
J
author
Correa
V
F
author
2015
A comprehensive experimental and theoretical study of the low temperature properties of GdCoIn5 was performed. Specific heat, thermal expansion, magnetization and electrical resistivity were measured in good quality single crystals down to 4He temperatures. All the experiments show a second-order-like phase transition at 30 K probably associated with the onset of antiferromagnetic order. The magnetic susceptibility shows a pronounced anisotropy below T N with an easy magnetic axis perpendicular to the crystallographic Ä‰-axis. Total energy GGA+U calculations indicate a ground state with magnetic moments localized at the Gd ions and allowed a determination of the Gd-Gd magnetic interactions. Band structure calculations of the electron and phonon contributions to the specific heat together with Quantum Monte Carlo calculations of the magnetic contributions show a very good agreement with the experimental data. Comparison between experiment and calculations suggests a significant anharmonic contribution to the specific heat at high temperature (View the MathML sourceTâ‰³100K).
exported from refbase (http://fisica.cab.cnea.gov.ar/bt/refbase/show.php?record=701), last updated on Sat, 04 Oct 2014 18:53:16 -0300
text
http://www.sciencedirect.com/science/article/pii/S0304885314008440#
http://www.sciencedirect.com/science/article/pii/S0304885314008440#
10.1016/j.jmmm.2014.09.024
Betancourth_etal2015
Journal of Magnetism and Magnetic Materials
J. Magn. Magn. Mater.
2015
continuing
periodical
academic journal
374
744
747