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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/9140

Title: Magnetic susceptibility and heat capacity of a novel antiferromagnet: LiNi(2)P(3)O(10) and the effect of doping
Authors: KHUNTIA, P
MAHAJAN, AV
Keywords: heisenberg-antiferromagnet
superconductivity
la2cuo4
Issue Date: 2010
Publisher: IOP PUBLISHING LTD
Citation: JOURNAL OF PHYSICS-CONDENSED MATTER, 22(29), -
Abstract: We report the synthesis, x-ray diffraction, magnetic susceptibility and specific heat measurements on polycrystalline samples of undoped LiNi(2)P(3)O(10) and samples with non-magnetic impurity (Zn(2+), S = 0) and magnetic impurity (Cu(2+), S = 1/2) at the Ni site. The magnetic susceptibility data show a broad maximum at around 10 K and a small anomaly at about 7 K in the undoped sample. There is a lambda-like anomaly in the specific heat at 7 K, possibly due to the onset of antiferromagnetic ordering in the system. The magnetic entropy change at the ordering temperature is close to the value corresponding to R ln(2S + 1) expected for an S = 1 system. The temperature corresponding to the broad maximum and the ordering temperature both decrease on Zn and Cu substitutions and also in applied magnetic fields.
URI: http://dx.doi.org/10.1088/0953-8984/22/29/296002
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9140
http://hdl.handle.net/10054/9140
ISSN: 0953-8984
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