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Phase transitions in NdNiPb and Nd5NiPb3

J. Appl. Phys. 103, 07B709 (2008); doi:10.1063/1.2830560

Published 23 January 2008

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V. Goruganti, K. D. D. Rathnayaka, and Joseph H. Ross, Jr.
Department of Physics, Texas A&M University, College Station, Texas 77843-4242, USA

Y. Öner
Department of Physics, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
We report magnetic and thermodynamic measurements for NdNiPb and Nd5NiPb3. High-temperature Curie-Weiss fits yield effective moments per Nd of 3.59µB for NdNiPb and 3.70µB for Nd5NiPb3. These are close to the Nd3+ ionic moment, 3.62µB, showing that Ni is nonmagnetic in both cases. For NdNiPb a peak seen in both the magnetization and specific heat at 3.5  K indicates an antiferromagnetic transition at that temperature. Specific heat measurements show this transition to be formed from crystal-field-split Nd magnetic levels, and a fit yields values for crystal field splitting. Nd5NiPb3 exhibits two magnetic transitions, an antiferromagnetic transition at 42  K, and an apparently weak-ferromagnetic canting transition at 8  K. These are confirmed by specific heat measurements. M-H curves show metamagnetism at temperatures between the two magnetic transitions. ©2008 American Institute of Physics
History: Presented 8 November 2007; received 11 October 2007; accepted 20 September 2007; published 23 January 2008
Permalink: http://link.aip.org/link/?JAPIAU/103/07B709/1
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KEYWORDS and PACS

Keywords
PACS
  • 75.30.Kz
    Magnetic phase boundaries
  • 75.40.Cx
    Static properties of magnetic materials
  • 75.30.Cr
    Saturation moments and magnetic susceptibilities in magnetically ordered materials
  • 75.60.Ej
    Magnetization curves, hysteresis, Barkhausen and related effects
  • 71.70.Ch
    Crystal and ligand fields
  • YEAR: 2008

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PUBLICATION DATA

ISSN:
0021-8979 (print)   1089-7550 (online)
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REFERENCES (8)
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  1. A. D. Chinchure, E. Munoz-Sandoval, and J. A. Mydosh, Phys. Rev. B 64, 020404 (2001).
  2. V. Goruganti, Y. Li, J. H. Ross, Jr., K. D. D. Rathnayaka, and Y. Oner, J. Appl. Phys. 99, 08P303 (2006).
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