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Magnetic anisotropy of NaxCoO2 single crystals

Journal Article


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Abstract


  • We report the magnetic properties of single crystals of NaxCoO2 (x=0.42, 0.82, and 0.87). The magnetic susceptibility measurements revealed considerable anisotropy along H parallel to ab and H parallel to c for the as-grown single crystals. It was found that an antiferromagnetic transition with a Neel temperature T-N=21 K occurred for the x=0.82 sample, and there was a paramagnetic phase for the x=0.87 sample over a wide temperature range from 2 to 300 K, but the sample with x=0.42 shows a monotonic increase of chi with increasing temperature above similar to 100 K. In addition, the x=0.82 sample has the largest derived anisotropic g-factor ratio (g(ab)/g(c)similar to 1.30), whereas the sample with x=0.42 is nearly isotropic (g(ab)/g(c)similar to 0.96). (C) 2008 American Institute of Physics.

UOW Authors


Publication Date


  • 2008

Citation


  • Chen, D., Wang, X., Lin, C. T. & Dou, S. Xue. (2008). Magnetic anisotropy of NaxCoO2 single crystals. Journal of Applied Physics, 103 (7), 07C702-1-07C702-3.

Scopus Eid


  • 2-s2.0-42149128322

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1125&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/126

Start Page


  • 07C702-1

End Page


  • 07C702-3

Volume


  • 103

Issue


  • 7

Place Of Publication


  • USA

Abstract


  • We report the magnetic properties of single crystals of NaxCoO2 (x=0.42, 0.82, and 0.87). The magnetic susceptibility measurements revealed considerable anisotropy along H parallel to ab and H parallel to c for the as-grown single crystals. It was found that an antiferromagnetic transition with a Neel temperature T-N=21 K occurred for the x=0.82 sample, and there was a paramagnetic phase for the x=0.87 sample over a wide temperature range from 2 to 300 K, but the sample with x=0.42 shows a monotonic increase of chi with increasing temperature above similar to 100 K. In addition, the x=0.82 sample has the largest derived anisotropic g-factor ratio (g(ab)/g(c)similar to 1.30), whereas the sample with x=0.42 is nearly isotropic (g(ab)/g(c)similar to 0.96). (C) 2008 American Institute of Physics.

UOW Authors


Publication Date


  • 2008

Citation


  • Chen, D., Wang, X., Lin, C. T. & Dou, S. Xue. (2008). Magnetic anisotropy of NaxCoO2 single crystals. Journal of Applied Physics, 103 (7), 07C702-1-07C702-3.

Scopus Eid


  • 2-s2.0-42149128322

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1125&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/126

Start Page


  • 07C702-1

End Page


  • 07C702-3

Volume


  • 103

Issue


  • 7

Place Of Publication


  • USA