"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

Magnetic entropy changes and relative cooling powers in GdxLa1-xNi5 compounds

I. CREANGA1,*

Affiliation

  1. Department of Physics, University “Politehnica” Bucharest, Splaiul Independentei 313,060042, Bucharest, Romania

Abstract

Magnetic properties and magnetocaloric effects were studied in GdxLa1-xNi5 compounds. The Curie temperatures decrease from TC = 35 K in GdNi5 to 9K for a sample with x = 0.2. The maximum entropy changes, in field of H = 7 T, vary from 12.8 J/kgK (x=1.0) to 5.5 J/kgK (x = 0.2). In high external field, linear dependences of the maxima in the entropy changes on H2/3 were shown as expected for compounds which show a second order type magnetic transition. The relative cooling power in field of 7 T, decreased from 347 J/kg (x = 1.0) to 80 J/kg (x = 0.2)..

Keywords

Intermetallic compounds, Magnetocaloric effect, Magnetic properties.

Citation

I. CREANGA, Magnetic entropy changes and relative cooling powers in GdxLa1-xNi5 compounds, Optoelectronics and Advanced Materials - Rapid Communications, 7, 9-10, September-October 2013, pp.734-737 (2013).

Submitted at: Aug. 20, 2013

Accepted at: Sept. 18, 2013