Title of article
Synthesis and characterization of the colossal magnetoresistance manganite La1.2(Sr1.4Ca0.4)Mn2O7 by citrate gel
Author/Authors
Chen، نويسنده , , C.C. and Shen، نويسنده , , C.H. and Liu، نويسنده , , R.S. and Lin، نويسنده , , J.G. and Huang، نويسنده , , C.Y.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2002
Pages
12
From page
235
To page
246
Abstract
Single-phase La1.2(Sr1.4Ca0.4)Mn2O7 has been synthesized from the aqueous solution of metal nitrates and citric acid by the sol–gel technique. Small particle size with high homogeneity of the powder was obtained. The valence of Mn is determined to be 3.45±0.05 by chemical titration. The MR ratio [ρ−ρ(H)]/ρ(H), is 115% (102 K, 1.5 T) for the composition prepared by the citrate route, and is nearly three times larger than that of the sample prepared by solid state reaction.
Keywords
A. Inorganic compounds , A. Oxides , A. Magnetic materials , D. Crystal structure
Journal title
Materials Research Bulletin
Serial Year
2002
Journal title
Materials Research Bulletin
Record number
2095636
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