Mössbauer Spectroscopy and Magnetic Properties of Bi0.8Ca0.2-xSrxFeO3 Nanoparticles by Sol-Gel Method
Doping at A/B-sites can effectively improve the physical properties of perovskite ferrites. In this study, the performance of Bi<sub>0.8</sub>Ca<sub>0.2</sub><em><sub>-x</sub></em>Sr<em><sub>x</sub></em>FeO<sub>3 </sub&...
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Kaunas University of Technology
2019-04-01
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| Series: | Medžiagotyra |
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| Online Access: | http://matsc.ktu.lt/index.php/MatSc/article/view/19456 |
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| author | Jin Pei LIN Ze Ping GUO Yun Long WANG Qing LIN Kang Ling HUANG Yun HE |
| author_facet | Jin Pei LIN Ze Ping GUO Yun Long WANG Qing LIN Kang Ling HUANG Yun HE |
| author_sort | Jin Pei LIN |
| collection | DOAJ |
| description | Doping at A/B-sites can effectively improve the physical properties of perovskite ferrites. In this study, the performance of Bi<sub>0.8</sub>Ca<sub>0.2</sub><em><sub>-x</sub></em>Sr<em><sub>x</sub></em>FeO<sub>3 </sub>was<sub> </sub>investigated using the sol-gel autocombustion method. The results show that with an increase in <em>x</em> value, the grain size first increases and then decreases. With an increase in the doping concentration, the reunion phenomenon reduces, but the smoothness and flatness of the samples are also destroyed. Moreover, with increasing Sr<sup>2+</sup> concentration, particle growth is inhibited, resulting in smaller particle sizes. When the Sr<sup>2+</sup> concentration increases to a certain value, the environment becomes advantageous for particle growth and therefore the particle size increases. For <em>x=</em>0.13, small particles are obtained. With increasing Sr<sup>2+</sup> concentration, the spatial modulation of the spin structure is destroyed, the lattice distorts, and the magnetic force is freed. Mössbauer spectrum measurements shows that when the Ca<sup>2+</sup> concentration is greater than the Sr<sup>2+</sup> concentration, Sr<sup>2+</sup> ions replace Ca<sup>2+</sup> ions; as a result, A-A magnetic superexchange diminishes, leading to a decrease in the hyperfine field. Appropriate doping of BiFeO<sub>3</sub> can improve its coercivity and refine its grains and result in a larger magnetic force. |
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| issn | 1392-1320 2029-7289 |
| language | English |
| last_indexed | 2024-12-23T23:11:35Z |
| publishDate | 2019-04-01 |
| publisher | Kaunas University of Technology |
| record_format | Article |
| series | Medžiagotyra |
| spelling | doaj.art-9147b168f54649a2b08a07a14cb83ad72022-12-21T17:26:39ZengKaunas University of TechnologyMedžiagotyra1392-13202029-72892019-04-0125213514010.5755/j01.ms.25.2.194569696Mössbauer Spectroscopy and Magnetic Properties of Bi0.8Ca0.2-xSrxFeO3 Nanoparticles by Sol-Gel MethodJin Pei LINZe Ping GUOYun Long WANGQing LINKang Ling HUANGYun HEDoping at A/B-sites can effectively improve the physical properties of perovskite ferrites. In this study, the performance of Bi<sub>0.8</sub>Ca<sub>0.2</sub><em><sub>-x</sub></em>Sr<em><sub>x</sub></em>FeO<sub>3 </sub>was<sub> </sub>investigated using the sol-gel autocombustion method. The results show that with an increase in <em>x</em> value, the grain size first increases and then decreases. With an increase in the doping concentration, the reunion phenomenon reduces, but the smoothness and flatness of the samples are also destroyed. Moreover, with increasing Sr<sup>2+</sup> concentration, particle growth is inhibited, resulting in smaller particle sizes. When the Sr<sup>2+</sup> concentration increases to a certain value, the environment becomes advantageous for particle growth and therefore the particle size increases. For <em>x=</em>0.13, small particles are obtained. With increasing Sr<sup>2+</sup> concentration, the spatial modulation of the spin structure is destroyed, the lattice distorts, and the magnetic force is freed. Mössbauer spectrum measurements shows that when the Ca<sup>2+</sup> concentration is greater than the Sr<sup>2+</sup> concentration, Sr<sup>2+</sup> ions replace Ca<sup>2+</sup> ions; as a result, A-A magnetic superexchange diminishes, leading to a decrease in the hyperfine field. Appropriate doping of BiFeO<sub>3</sub> can improve its coercivity and refine its grains and result in a larger magnetic force.http://matsc.ktu.lt/index.php/MatSc/article/view/19456Sr-substituted, Perovskite, Structure, Magnetic properties, Mössbauer |
| spellingShingle | Jin Pei LIN Ze Ping GUO Yun Long WANG Qing LIN Kang Ling HUANG Yun HE Mössbauer Spectroscopy and Magnetic Properties of Bi0.8Ca0.2-xSrxFeO3 Nanoparticles by Sol-Gel Method Medžiagotyra Sr-substituted, Perovskite, Structure, Magnetic properties, Mössbauer |
| title | Mössbauer Spectroscopy and Magnetic Properties of Bi0.8Ca0.2-xSrxFeO3 Nanoparticles by Sol-Gel Method |
| title_full | Mössbauer Spectroscopy and Magnetic Properties of Bi0.8Ca0.2-xSrxFeO3 Nanoparticles by Sol-Gel Method |
| title_fullStr | Mössbauer Spectroscopy and Magnetic Properties of Bi0.8Ca0.2-xSrxFeO3 Nanoparticles by Sol-Gel Method |
| title_full_unstemmed | Mössbauer Spectroscopy and Magnetic Properties of Bi0.8Ca0.2-xSrxFeO3 Nanoparticles by Sol-Gel Method |
| title_short | Mössbauer Spectroscopy and Magnetic Properties of Bi0.8Ca0.2-xSrxFeO3 Nanoparticles by Sol-Gel Method |
| title_sort | mossbauer spectroscopy and magnetic properties of bi0 8ca0 2 xsrxfeo3 nanoparticles by sol gel method |
| topic | Sr-substituted, Perovskite, Structure, Magnetic properties, Mössbauer |
| url | http://matsc.ktu.lt/index.php/MatSc/article/view/19456 |
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