Open AccessStudy of the magnetic disaccommodation in La doped YIG
Author(s) -
Torres C.,
HernándezGómez P.,
Francisco C. de,
González Arias A.,
Muñoz J. M.,
Alejos O.,
Perdigão J. M.,
Ferreira A. R.
Publication year - 2005
Publication title -
physica status solidi (c)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 46
eISSN - 1610-1642
pISSN - 1610-1634
DOI - 10.1002/pssc.200461716
Subject(s) - materials science , yttrium iron garnet , sintering , doping , yttrium , analytical chemistry (journal) , solubility , atmosphere (unit) , reducing atmosphere , phase (matter) , condensed matter physics , mineralogy , nuclear magnetic resonance , chemistry , composite material , metallurgy , thermodynamics , oxide , physics , optoelectronics , chromatography , organic chemistry
The relaxation of the initial magnetic permeability of La doped yttrium iron garnet (YIG) samples with nominal composition Y 3– x La x Fe 5 O 12 (0< x <0.6) is analysed in this work. The results show a very different behaviour depending on the sintering atmosphere used for the fabrication of the samples. Concretely, for the samples sintered in air, it just have been detected the usual relaxation peak found in YIG at 130 K. However, a new relaxation peak appears around room temperature for the samples sintered in CO 2 atmosphere when the La content is at least of 0.3. These results have been interpreted in terms of the formation of a secondary perovskite phase when the La solubility limit is reached. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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