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Structural, magnetic and magnetocaloric properties of R2/3Ba1/3MnO3 (R =La,Pr) manganites

A. BEZERGHEANU1,* , G. SCUTARU1, I.G. DEAC2, C.B. CIZMAŞ1

Affiliation

  1. Transilvania University of Braşov, Dep. Electrical Engineering & Applied Physics, 29 Eroilor Blvd., 500036, Braşov, România
  2. Babeş-Bolyai University, Faculty of Physics, 1 Kogălniceanu Str., 400084, Cluj-Napoca, România

Abstract

Structural, magnetic and magnetocaloric properties of La2/3Ba1/3MnO3 and Pr2/3Ba1/3MnO3manganites with perovskite type structure were studied. The magnetic measurements were performed in the temperature range 4.2 – 700K and external magnetic fields up to 7T. The adiabatic magnetic entropy changes, |ΔSM|, were determined from magnetization data. Transition temperature is around 360K for R = La and 190K for R=Pr. A large magnetocaloric effect (MCE) has been obtained in studied samples with a considerable value of relative cooling power (RCP)..

Keywords

Magnetocaloric effect, transition temperature, perovskites, entropy change.

Submitted at: April 9, 2015
Accepted at: June 24, 2015

Citation

A. BEZERGHEANU, G. SCUTARU, I.G. DEAC, C.B. CIZMAŞ, Structural, magnetic and magnetocaloric properties of R2/3Ba1/3MnO3 (R =La,Pr) manganites, Journal of Optoelectronics and Advanced Materials Vol. 17, Iss. 7-8, pp. 1128-1133 (2015)