Magnetic properties of Gd2C: Experiment and first principles calculations

TitleMagnetic properties of Gd2C: Experiment and first principles calculations
Publication TypeJournal Article
Year of Publication2011
AuthorsMudryk Y, Paudyal D, Pecharsky VK, Gschneidner KA
Journal TitleJournal of Applied Physics
Volume109
Pages07A924
Date Published04/01
Type of ArticleProceedings Paper
ISBN Number0021-8979
Accession NumberISI:000289949000308
Keywordselectronic-structure, gd(0001) surface, systems
Abstract

We report the crystal structure, magnetic properties, and electronic structure of Gd2C. The compound crystallizes in the rhombohderal CdCl2-type structure and has a Curie temperature of 351 K, which decreases to similar to 340 K after heat treatment at 1000 degrees C for 1 week. The magnetic ordering transition is of second order, and the saturation magnetic moment measured at 2 K in 70 kOe magnetic field is 7.26 mu(B)/Gd which compares well with 7.34 mu(B)/Gd calculated from first principles. The electronic structure calculations performed using the tight bonding linear muffin tin orbital method within the non local exchange correlation potentials show stronger exchange interactions compared to the local exchange correlation potentials leading to the high Curie temperature of Gd2C. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3554257]

URL<Go to ISI>://000289949000308
DOI10.1063/1.3554257
Alternate JournalJ. Appl. Phys.