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Anisotropic Magnetocaloric Effect and Magnetic Order in Antiferromagnetic Gd2InGe2

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DOI: 10.4236/wjcmp.2013.34029    3,746 Downloads   5,891 Views   Citations
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A. L. Lima Sharma, A. M. Gomes, P. A. Sharma

Affiliation(s)

.
Instituto de Física, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
Sandia National Laboratories, Albuquerque, USA.

ABSTRACT

We investigated the transport, thermal and magnetic properties of antiferromagnetic (TN = 45 K) Gd2InGe2. Magnetization measurements under applied magnetic field, oriented along different crystallographic directions, were used to extract the anisotropic magnetocaloric effect. We also measured magnetization under pulsed field up to 45 T. From the analysis of the electrical transport and magnetization, conduction band electrons were weakly coupled to Gd f-electron local moments. Differential scanning calorimeter data confirmed a second order phase of the antiferromagnetic to paramagnetic transition. The anisotropic magnetocaloric effect points to a model of magnetic ordering whereby Gd local moments couple ferromagnetically and antiferromagnetically perpendicular and parallel, respectively, to the c-axis.

KEYWORDS

Intermetallic Compounds; Flux Growth; Magnetocaloric Effect; Anisotropy

Cite this paper

Lima Sharma, A. , Gomes, A. and Sharma, P. (2013) Anisotropic Magnetocaloric Effect and Magnetic Order in Antiferromagnetic Gd2InGe2. World Journal of Condensed Matter Physics, 3, 180-183. doi: 10.4236/wjcmp.2013.34029.

Conflicts of Interest

The authors declare no conflicts of interest.

References

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