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57Fe Mössbauer and Magnetism study of Mo6+ and W6+ substituted four-layer Aurivillius Bi5FeTi3O15 compound.
- Source :
- Hyperfine Interactions; 10/30/2021, Vol. 242 Issue 1, p1-9, 9p
- Publication Year :
- 2021
-
Abstract
- The present work reports the structural, electrical and magnetic properties of W<superscript>6+</superscript> and Mo<superscript>6+</superscript> substituted four-layer Aurivillius compound, Bi<subscript>5</subscript>FeTi<subscript>3</subscript>O<subscript>15</subscript> (BFTO). The oxidation states of the dopants and other elements of BFTO are studied from x-ray photo-electron and <superscript>57</superscript>Fe Mössbauer spectroscopy. The substitution resulted in a net increase of magnetic cation (Fe<superscript>3+</superscript>) from 25% to about 37.5% in BFTO. However, the magnetization measurements indicate the lack of magnetic ordering even down to 2 K. Further, the high temperature (300-1070 K) dielectric study of these compounds reveal the ferroelectric transition temperature decreases with the increase of magnetic cations in BFTO because of hexavalent W<superscript>6+</superscript> and Mo<superscript>6+</superscript> substitution at Ti<superscript>4+</superscript> site. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03043843
- Volume :
- 242
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Hyperfine Interactions
- Publication Type :
- Academic Journal
- Accession number :
- 153317608
- Full Text :
- https://doi.org/10.1007/s10751-021-01747-1