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Prog. Theor. Phys. Supplement No.159 (2005) pp. 61-66

[ Full Text PDF : FREE ACCESS (361K) ]

Dilute Kagomé Lattice Magnetism with S = 1/2 on Rb2(Pd1-xMx)3S4(M = Co, Mn)

Ryota Kuki,1 Yoshihiro Fujiwara,1 Toshio Ono,1 Katsunori Iio,1 Makoto Tachibana,2 Toru Atake2 and Yumi Nakai3

1Department of Physics, Graduate School of Science and Engineering, Tokyo Institute of Technology, Tokyo 152-8551, Japan
2Materials and Structures Laboratory Tokyo Institute of Technology, Yokohama 226-8503, Japan
3Application and Research Center JEOL.LTD., Akisima 196-8558, Japan

Abstract:

An attempt to substitute Co2+, Mn2+ for Pd2+ was performed to yield dilute Kagomé lattice magnetism of S = 1/2 on a ternary transition metal chalocogenide Rb2Pd3S4. This compound takes a crystal structure, Pd sites of which constitute Kagomé lattice nets. Because the divalent Pd2+(4d)8's on the Kagomé lattice are in a low-spin state of spin-less owing to specific characteristics of the crystal field influencing on the Pd sites. Magnetic properties of specimens thus obtained were examined through magnetic susceptibility, ESR and specific heat measurements. Several data were obtained for confirming the syntheses of S=1/2 systems in spite of dilute magnetic ones with substitutional ratio x's below the site percolation threshold xp = 0.62 of the Kagomé lattice.


URL : http://ptp.ipap.jp/link?PTPS/159/61/
DOI : 10.1143/PTPS.159.61

[ Full Text PDF : FREE ACCESS (361K) ] Citation:

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