Effect of Ga Addition on Structure and Magnetic Properties of the LaFe11.14Co0.66Si1.2-xGax (x=0.1, 0.2, 0.3) Alloys

P. Gębaraa, P. Pawlik a, B. Michalski b, J.J. Wysłocki a and K. Kotynia a aInstitute of Physics, Częstochowa University of Technology, Armii Krajowej 19, 42-200 Częstochowa, Poland bFaculty of Materials Engineering, Warsaw University of Technology, Wołoska 141, 02-507 Warszawa, Poland

Received: February 2, 2015

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In the present work, the phase constitution and magnetic properties of the LaFe11.14Co0.66Si1.2-xGax (where x=0.1, 0.2, 0.3) alloys, were investigated. It was revealed that increase of Ga content in the alloy composition causes the rise of lattice parameter of the La(Fe,Si)13-type phase, which causes increase of the Curie temperature. However, the increase of Ga addition leads to decrease of magnetocaloric effect.

DOI: 10.12693/APhysPolA.128.87 PACS numbers: 75.30.Sg, 75.50.Bb