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Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/61768
Title: Effect of titanium ion substitution in the barium hexaferrite studied by Mössbauer spectroscopy and X-ray diffraction
Authors: Quiroz, Pamela; Halbedel, Bernd; Bustamante, Ángel; González González, Juan Carlos
Keywords: Barium hexaferrite
Mössbauer spectroscopy
X-ray diffraction
Issue Date: Nov-2011
Publisher: Springer
Citation: Hyperfine Interactions 202 (1-3): 97-106 (2011)
Abstract: A series of M-type barium hexaferrite has been synthesized in a glass melt by partially substituting the Fe2O3 with TiO2 for investigation of their structure. The glass melt has the basic composition (mol%): 40 BaO + 33 B2O3 + (27-x) Fe2O3 + x TiO2 with x = 0, 3.6, 5.4 and 7.2 mol% TiO2. The substituted ferrites were studied by means of X-ray diffraction, Mössbauer spectroscopy and vibration sample magnetometer. X-ray diffraction studies revealed that not all samples have a single ferritic phase, a small second phase corresponding to BaTi6O13 was also observed to form. The Mössbauer spectra changed from magnetically ordered (x = 0) to magnetically ordered with strong line broadening. Moreover, the broadening increases with TiO2 content. The Mössbauer parameters suggested that Ti4 +  occupies the 2a and 12k crystal sites, and the Ti4 +  substitution on the 2b and 4f2 site also occurs at high melt dopings. Therefore, coercivity and saturation magnetization decreased
Description: 10 pages
Publisher version (URL): http://dx.doi.org/10.1007/s10751-011-0361-1
URI: http://hdl.handle.net/10261/61768
ISSN: 0304-3843
DOI: 10.1007/s10751-011-0361-1
E-ISSN: 1572-9540
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