Critical Behavior and Magnetocaloric Effect Near the Paramagnetic to Ferromagnetic Phase Transition Temperature in La0.7Pb0.05Na0.25MnO3

A. Tozri; E. Dhahri; E. K. Hlil; M. Sajieddine; M. Valente; Electromagnet Acad

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Critical Behavior and Magnetocaloric Effect Near the Paramagnetic to Ferromagnetic Phase Transition Temperature in La0.7Pb0.05Na0.25MnO3

A. Tozri, E. Dhahri, E. K. Hlil, M. Sajieddine, M. Valente and Electromagnet Acad

PIERS 2011 MARRAKESH: PROGRESS IN ELECTROMAGNETICS RESEARCH SYMPOSIUM, pp.1900-1904

Progress in Electromagnetics Research Symposium

01/01/2011

Abstract

Engineering

Engineering, Electrical & Electronic

Physical Sciences

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Physics, Applied

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The Magnetocaloric effect (MCE) of La0.7Pb0.05Na0.25MnO3 shows a relatively high value of magnetic entropy change (Delta S-M) and important relative cooling power, making it a promising candidate for magnetic refrigeration. A recently proposed master curve behavior for the magnetic entropy change is also followed by this specimen and by other manganites such as La0.8Pb0.1MnO3 (LPMO) and La0.8Pb0.1Na0.1MnO3 (LPNMO). To determine the field dependence of the experimental Delta S-M, a local exponent n(T, H) was calculated.

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Title: Critical Behavior and Magnetocaloric Effect Near the Paramagnetic to Ferromagnetic Phase Transition Temperature in La0.7Pb0.05Na0.25MnO3
Creators - without role: A. Tozri - University of Sfax
E. Dhahri - University of Sfax
E. K. Hlil - Univ J Fourier, Inst Neel, CNRS, F-38042 Grenoble, France
M. Sajieddine - Univ Sultan Moulay Sliman, Fac Sci & Tech, Mecan Phys Lab, Beni Mellal 23000, Morocco
M. Valente - University of Aveiro
Electromagnet Acad
Publication Details: PIERS 2011 MARRAKESH: PROGRESS IN ELECTROMAGNETICS RESEARCH SYMPOSIUM, pp.1900-1904
Series: Progress in Electromagnetics Research Symposium
Publisher: Electromagnetics Acad
Number of pages: 5
Grant note: The French Ministry of Higher Education and Scientific Research Ministry of National Education, Higher Education, Executives training and Scientific Research of Morocco Tunisian Ministry of Higher Education and Scientific Research
Identifiers: 9912689408331
Academic Unit: Al Jouf University
Language: English
Resource Type: Conference proceeding