Ferromagnetism in nanoscale BiFeO3
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
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| Title |
Ferromagnetism in nanoscale BiFeO3
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| Creator |
Mazumder, R
Sujatha Devi, P Bhattacharya, Dipten Choudhury, Pranab Sen, Amarnath Raja, M |
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| Subject |
Electronics
Engineering Materials |
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| Description |
A remarkably high saturation magnetization of similar to 0.4 mu(B)/Fe along with room temperature ferromagnetic hysteresis loop has been observed in nanoscale (4-40 nm) multiferroic BiFeO3 which in bulk form exhibits weak magnetization (similar to 0.02 mu(B)/Fe) and an antiferromagnetic order. The magnetic hysteresis loops exhibit exchange bias and vertical asymmetry which could be because of spin pinning at the boundaries between ferromagnetic and antiferromagnetic domains. Interestingly, both the calorimetric and dielectric permittivity data in nanoscale BiFeO3 exhibit characteristic features at the magnetic transition point. These features establish the formation of a true ferromagnetic-ferroelectric system with a coupling between the respective order parameters in nanoscale BiFeO3.
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| Publisher |
American Institute of Physics
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| Date |
2007-08-06
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cgcri.csircentral.net/508/1/App_Phys_Lett_91_(2007)_062510.pdf
Mazumder, R and Sujatha Devi, P and Bhattacharya, Dipten and Choudhury, Pranab and Sen, Amarnath and Raja, M (2007) Ferromagnetism in nanoscale BiFeO3. Applied Physics Letters, 91 (6). Article No.-062510. ISSN 0003-6951 |
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| Relation |
http://cgcri.csircentral.net/508/
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