Multiferroic and magnetoelectric properties of MnFe2O4/(Pb0.8Sr0.2)TiO3 composite films
IR@NPL: CSIR-National Physical Laboratory, New Delhi
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| Title |
Multiferroic and magnetoelectric properties of MnFe2O4/(Pb0.8Sr0.2)TiO3 composite films
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| Creator |
Negi, Nainjeet Singh
Bala, Kanchan Sharma, Pankaj Kotnala, Ravinder Kumar |
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| Subject |
Materials Science
Metallurgy & Metallurgical Engineering Applied Physics/Condensed Matter |
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| Description |
MnFe2O4/(Pb0.8Sr0.2)TiO3 (MFO/PST20) heterostructured composite films with three different structures have been grown on Pt/TiO2/SiO2/Si substrates by metal-organic decomposition processing via spin coating technique. The structural analysis revealed that the crystal axes of the MnFe2O4 are aligned with those of the PST20 ferroelectric matrix with obvious interfaces and no diffusions exist in all the three composite films. These composite films exhibit simultaneously multiferroic and magnetoelectric responses at room temperature. The growth structure of MFO and PST20 layers has an effect on multiferroic and magnetoelectric coupling behaviours of the composite films. The bi- and four-layered MFO/PST20 composite films exhibit superior ferroelectric properties compared to the tri-layered film. The increasing MFO and PST20 layers in the composite films enhance ferromagnetic properties and are closely related to the strain release in MnFe2O4 phase. The MFO/PST20 bi-layered composite film shows a high magnetoelectric voltage co-efficient (E) similar to 194 mVcm(-1)Oe(-1) at a dc magnetic field H-dc similar to 2.5 kOe. A significant decrease in (E) value has been observed for tri- and four- layered composite films. A close correlation between phase selective residual stress and magnetoelectric properties has been emerged. The results are reasonably encouraging for employing MnFe2O4 for growing multiferroic-magnetoelectric composite films
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| Publisher |
Taylor & Francis
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| Date |
2017
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://npl.csircentral.net/2798/1/Multiferroic%20and%20magnetoelectric%20properties%20of%20MnFe2O4%20%28Pb0.8Sr0.2%29TiO3%20composite%20films.pdf
Negi, Nainjeet Singh and Bala, Kanchan and Sharma, Pankaj and Kotnala, Ravinder Kumar (2017) Multiferroic and magnetoelectric properties of MnFe2O4/(Pb0.8Sr0.2)TiO3 composite films. Philosophical Magazine, 97 (4). pp. 269-283. ISSN 1478-6435 |
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| Relation |
http://npl.csircentral.net/2798/
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