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Band structure, magnetic, and transport properties of two dimensional compounds Sr2-xGdxCoO4

Journal Article


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Abstract


  • The layered perovskite compound Sr2-xGdxCoO 4 has not yet been subjected to detailed study so far. In this report, structures, transport, magnetic properties, and first principle calculations will be reported for the two dimensional compounds Sr 2-xGdxCoO4 (x 0.5, 0.75, 1, 1.25). Rietveld refinement revealed that these compounds are crystallized in K2NiF 4-type structures with space group I4/mmm. It was found that the lattice parameter c decreases as x increases. Through the Curies Weiss fitting of the temperature dependent magnetization, it was found that the Sr 1.25Gd0.75CoO4 sample exhibits a weak ferromagnetic to paramagnetic transition at about 62 K, with a Curie constant of 0.113 emu K/mol. Band structure calculations indicated that electrons of these compounds are spin polarized at the Fermi level. The 2-D Variable Range Hopping model fitting indicated that the two dimensional variable range hopping mechanism could be used to account for the conducting mechanism for these samples. © 2013 American Institute of Physics.

Publication Date


  • 2013

Citation


  • Yao, Q., Wang, X., Kimura, H., Dou, S. X., Konstantinov, K., Cheng, Z., Hong, F., Zhao, H., Qiu, H. & Ozawa, K. (2013). Band structure, magnetic, and transport properties of two dimensional compounds Sr2-xGdxCoO4. Journal of Applied Physics, 113 (17), 17B522-1-17B522-3.

Scopus Eid


  • 2-s2.0-84877735421

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1695&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/695

Has Global Citation Frequency


Start Page


  • 17B522-1

End Page


  • 17B522-3

Volume


  • 113

Issue


  • 17

Place Of Publication


  • United States

Abstract


  • The layered perovskite compound Sr2-xGdxCoO 4 has not yet been subjected to detailed study so far. In this report, structures, transport, magnetic properties, and first principle calculations will be reported for the two dimensional compounds Sr 2-xGdxCoO4 (x 0.5, 0.75, 1, 1.25). Rietveld refinement revealed that these compounds are crystallized in K2NiF 4-type structures with space group I4/mmm. It was found that the lattice parameter c decreases as x increases. Through the Curies Weiss fitting of the temperature dependent magnetization, it was found that the Sr 1.25Gd0.75CoO4 sample exhibits a weak ferromagnetic to paramagnetic transition at about 62 K, with a Curie constant of 0.113 emu K/mol. Band structure calculations indicated that electrons of these compounds are spin polarized at the Fermi level. The 2-D Variable Range Hopping model fitting indicated that the two dimensional variable range hopping mechanism could be used to account for the conducting mechanism for these samples. © 2013 American Institute of Physics.

Publication Date


  • 2013

Citation


  • Yao, Q., Wang, X., Kimura, H., Dou, S. X., Konstantinov, K., Cheng, Z., Hong, F., Zhao, H., Qiu, H. & Ozawa, K. (2013). Band structure, magnetic, and transport properties of two dimensional compounds Sr2-xGdxCoO4. Journal of Applied Physics, 113 (17), 17B522-1-17B522-3.

Scopus Eid


  • 2-s2.0-84877735421

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1695&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/695

Has Global Citation Frequency


Start Page


  • 17B522-1

End Page


  • 17B522-3

Volume


  • 113

Issue


  • 17

Place Of Publication


  • United States