Preparation and characterization of rare earth-doped strontium hexaferrites Sr1-xMxFe12O19(M=La, Eu)

The doping of strontium hexaferrite by europium and lanthanum was achieved by the following methods: (1) calcination of SrCO3, alpha-Fe2O3 and either La2O3 or Eu2O3 at 1250 C, (2) calcination at 925 C of precipitates obtained from solutions of SrCl2.6H2O, FeCl3.6H2O, and either LaCl3.7H2O or EuCl3.6...

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Veröffentlicht in:	Journal of materials science letters 2001-01, Vol.20 (5), p.431-434
Hauptverfasser:	BERRY, F. J, MARCO, J. F, PONTON, C. B, WHITTLE, K. R
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemistry Condensed matter: electronic structure, electrical, magnetic, and optical properties Elements and non-metal compounds (oxides, hydroxides, hydrides, sulfides, carbides, ...) Exact sciences and technology Ferrimagnetics Inorganic chemistry and origins of life Magnetic properties and materials Physics Preparations and properties Studies of specific magnetic materials
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Zusammenfassung:	The doping of strontium hexaferrite by europium and lanthanum was achieved by the following methods: (1) calcination of SrCO3, alpha-Fe2O3 and either La2O3 or Eu2O3 at 1250 C, (2) calcination at 925 C of precipitates obtained from solutions of SrCl2.6H2O, FeCl3.6H2O, and either LaCl3.7H2O or EuCl3.6H2O, and (3) hydrothermal treatment at 220 C of solutions of Sr(NO3)2, Fe(NO3)3.9H2O, and either La(NO3)3.6H2O or Eu(NO3)3.5H2O. The products were characterised by X-ray powder diffraction, X-ray absorption fine structure, Mossbauer spectroscopy, and magnetic susceptibility measurements. 17 refs.
ISSN:	0261-8028
DOI:	10.1023/A:1010950430100