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Continuous phase transition in mixed-valent manganite Nd0.6Pb0.4MnO3

Sahana, M and Robler, UK and Ghosh, Nilotpal and Elizabeth, Suja and Bhat, HL and Nenkov, K and Eckert, D and Dorr, K and Wolf, M and Muller, K-H (2004) Continuous phase transition in mixed-valent manganite Nd0.6Pb0.4MnO3. In: Proceedings of the International Conference on Magnetism (ICM 2003), JUL 27-AUG 01, 2003, Rome, ITALY.

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Official URL: http://dx.doi.org/10.1016/j.jmmm.2003.11.124


The critical behaviour has been investigated in single crystalline Nd0.6Pb0.4MnO3 near the paramagnetic to ferromagnetic transition temperature (TC) by static magnetic measurements. The values of TC and the critical exponents β, γ and δ are estimated by analysing the data in the critical region. The exponent values are very close to those expected for 3D Heisenberg ferromagnets with short-range interactions. Specific heat measurements show a broad cusp at TC (i.e., exponent α<0) being consistent with Heisenberg-like behaviour.

Item Type: Conference Paper
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Manganites;CMR;Critical properties
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 08 Mar 2012 04:26
Last Modified: 08 Mar 2012 04:26
URI: http://eprints.iisc.ac.in/id/eprint/43801

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