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Continuous phase transition in mixed-valent manganite $Nd_{0.6}Pb_{0.4}MnO_{3}$

Sahana, M and Rossler, UK and Ghosh, N and Elizabeth, S and Bhat, HL and Eckert, D (2004) Continuous phase transition in mixed-valent manganite $Nd_{0.6}Pb_{0.4}MnO_{3}$. In: UNSPECIFIED.

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Abstract

The critical behaviour has been investigated in single crystalline $Nd_{0.6}Pb_{0.4}MnO_{3}$ near the paramagnetic to ferromagnetic transition temperature (TC) by static magnetic measurements. The values of TC and the critical exponents $\beta$, $\gamma$ and $\delta$ 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 $\alpha<0$) being consistent with Heisenberg-like behaviour.

Item Type: Conference Paper
Additional Information: copyright of this article belongs to Elsevier.
Keywords: Manganites;CMR;Critical properties.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 18 Dec 2008 10:05
Last Modified: 19 Sep 2010 04:53
URI: http://eprints.iisc.ernet.in/id/eprint/16791

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