Magnetoelectric Response in Multiferroic SrFe12O19 Ceramics.
We report here realization of ferroelectricity, ferromagnetism and magnetocapacitance effect in singleSrFe12O19ceramic at room temperature. The ceramics demonstrate a saturated polarization hysteresis loop, two nonlinear I-V peaks and large anomaly of dielectric constant near Curie temperature, whic...
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| Format: | Article |
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Public Library of Science (PLoS)
2016-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC5147852?pdf=render |
| _version_ | 1819110497692155904 |
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| author | Guolong Tan Yao Huang Haohao Sheng |
| author_facet | Guolong Tan Yao Huang Haohao Sheng |
| author_sort | Guolong Tan |
| collection | DOAJ |
| description | We report here realization of ferroelectricity, ferromagnetism and magnetocapacitance effect in singleSrFe12O19ceramic at room temperature. The ceramics demonstrate a saturated polarization hysteresis loop, two nonlinear I-V peaks and large anomaly of dielectric constant near Curie temperature, which confirm the intrinsic ferroelectricity of SrFe12O19 ceramicswith subsequent heat-treatment in O2atmosphere. The remnant polarization of the SrFe12O19 ceramic is estimated to be 103μC/cm2. The ceramic also exhibits strong ferromagnetic characterization, the coercive field and remnant magnetic moment are 6192Oe and 35.8emu/g, respectively. Subsequent annealing SrFe12O19 ceramics in O2 plays a key role on revealing its intrinsic ferroelectricity and improving the ferromagnetism through transforming Fe2+ into Fe3+. By applying a magnetic field, the capacitance demonstrates remarkable change along with B field, the maximum rate of change in ε (Δε(B)/ε(0)) is 1174%, which reflects a giant magnetocapacitance effect in SrFe12O19. XPS and molecular magnetic moment measurements confirmed the transformation of Fe2+ into Fe3+ and removal of oxygen vacancies upon O2 heat treatment. These combined functional responses in SrFe12O19 ceramics opens substantial possibilities for applications in novel electric devices. |
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| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-22T03:42:40Z |
| publishDate | 2016-01-01 |
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| spelling | doaj.art-0337b9f0eb15459594ddb3ab06a157802022-12-21T18:40:12ZengPublic Library of Science (PLoS)PLoS ONE1932-62032016-01-011112e016708410.1371/journal.pone.0167084Magnetoelectric Response in Multiferroic SrFe12O19 Ceramics.Guolong TanYao HuangHaohao ShengWe report here realization of ferroelectricity, ferromagnetism and magnetocapacitance effect in singleSrFe12O19ceramic at room temperature. The ceramics demonstrate a saturated polarization hysteresis loop, two nonlinear I-V peaks and large anomaly of dielectric constant near Curie temperature, which confirm the intrinsic ferroelectricity of SrFe12O19 ceramicswith subsequent heat-treatment in O2atmosphere. The remnant polarization of the SrFe12O19 ceramic is estimated to be 103μC/cm2. The ceramic also exhibits strong ferromagnetic characterization, the coercive field and remnant magnetic moment are 6192Oe and 35.8emu/g, respectively. Subsequent annealing SrFe12O19 ceramics in O2 plays a key role on revealing its intrinsic ferroelectricity and improving the ferromagnetism through transforming Fe2+ into Fe3+. By applying a magnetic field, the capacitance demonstrates remarkable change along with B field, the maximum rate of change in ε (Δε(B)/ε(0)) is 1174%, which reflects a giant magnetocapacitance effect in SrFe12O19. XPS and molecular magnetic moment measurements confirmed the transformation of Fe2+ into Fe3+ and removal of oxygen vacancies upon O2 heat treatment. These combined functional responses in SrFe12O19 ceramics opens substantial possibilities for applications in novel electric devices.http://europepmc.org/articles/PMC5147852?pdf=render |
| spellingShingle | Guolong Tan Yao Huang Haohao Sheng Magnetoelectric Response in Multiferroic SrFe12O19 Ceramics. PLoS ONE |
| title | Magnetoelectric Response in Multiferroic SrFe12O19 Ceramics. |
| title_full | Magnetoelectric Response in Multiferroic SrFe12O19 Ceramics. |
| title_fullStr | Magnetoelectric Response in Multiferroic SrFe12O19 Ceramics. |
| title_full_unstemmed | Magnetoelectric Response in Multiferroic SrFe12O19 Ceramics. |
| title_short | Magnetoelectric Response in Multiferroic SrFe12O19 Ceramics. |
| title_sort | magnetoelectric response in multiferroic srfe12o19 ceramics |
| url | http://europepmc.org/articles/PMC5147852?pdf=render |
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