Vuong Van Hiep, Do Thi Kim Anh, Ngac An Bang, Sai Cong Doanh, Nguyen Duy Thien, Huynh Dang Chinh, Pham Duc Hanh

Main Article Content


In this paper, we present the results of the study of the effect of residual La on crystal structure, magnetic properties of La1+dFe11.05Si1.95 (d = 0.00; 0.03; 0.06 and 0.09) compounds. The analysis of X-ray diffractions showed that when the La content increases to 9%, the structure still remains cubic in a typical NaZn13 arrangement with unchanged lattice constant (about 0.5%). All compounds exhibit ferromagnetic - paramagnetic phase transitions. The Curie temperature TC increases slightly from 235 to 245 K.

Keywords: NaZn13-type cubic structure, Magnetocaloric materials


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