Shape dependent multiferroic behavior in Bi2Fe4O9 nanoparticles
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
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| Title |
Shape dependent multiferroic behavior in Bi2Fe4O9 nanoparticles
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| Creator |
Sahoo, Aditi
Bhattacharya, Dipten Das, Moumita Mandal, Prabhat |
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| Subject |
Electronics
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| Description |
Ferroelectric and magnetic properties are investigated for Bi2Fe4O9 nanoparticles with different shapes (cuboid and sphere-like) synthesized by hydrothermal and sol-gel method. The magnetic study reveals that coercivity, Neel temperature and remanent magnetization strongly depend on shape of the particle. The nanoparticle with sphere-like shape exhibits magnetization curve of antiferromagnetic (AFM) ordering with ferromagnetic (FM) component. As the particle shape changes from sphere-like to cuboid, the AFM component is dominating over the ferromagnetic component. A small exchange bias is also observed at low temperature in both the sphere-like and cuboid nanoparticle. The coercivity, remanent magnetization and Neel temperature of sphere-like nanoparticle is greater than cuboid nanoparticle. Ferroelectric measurement shows the remanent polarization of cuboid is greater than sphere-like nanoparticle but the coercivity is almost same. This Bi2Fe4O9 nanoparticle shows a small change in polarization under magnetic field. The polarization value decreases with magnetic field increases. The magnetoelectric coupling-measured by change of remanent polarization under magnetic field are found to be greater in Bi2Fe4O9 sphere-like nanoparticles. These shape dependent magnetic and ferroelectric properties are coming because of shape anisotropy.
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| Publisher |
IOP Publishing
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| Date |
2022-07
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| Type |
Article
PeerReviewed |
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| Identifier |
Sahoo, Aditi and Bhattacharya, Dipten and Das, Moumita and Mandal, Prabhat (2022) Shape dependent multiferroic behavior in Bi2Fe4O9 nanoparticles. Nanotechnology, 33 (30). Art No-305702. ISSN 0957-4484
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| Relation |
http://cgcri.csircentral.net/5514/
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