Title of article
Magnetisation studies of phase co-existence in Gd1 − xCaxBaCo2O5.5
Author/Authors
Thirumurugan، نويسنده , , N. and Bharathi، نويسنده , , A. and Arulraj، نويسنده , , A. and Sundar، نويسنده , , C.S.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2012
Pages
6
From page
941
To page
946
Abstract
Magnetic properties of hole doped, oxygen deficient double perovskite compounds, Gd1 − xCaxBaCo2O5.5, have been investigated. Ferromagnetic transition temperatures increase and the anti-ferromagnetic transition temperatures decrease with Ca substitution leading to stabilisation of ferromagnetisim for x ≥ 0.05. A detailed study of the ferromagnetic phase indicates the presence of double hysterisis loops for Ca fractions, 0.05 ≤ x ≤ 0.2 in the 50–200 K temperature range, suggestive of the co-existence of two ferromagnetic phases with different co-ercivities. Based on the magnetisation and transport measurements a phase diagram is proposed for Ca doped GdBaCo2O5.5.
Keywords
B. Chemical synthesis , D. Magnetic properties , A. Oxides , A. Magnetic materials
Journal title
Materials Research Bulletin
Serial Year
2012
Journal title
Materials Research Bulletin
Record number
2101760
Link To Document