Low-field magnetoresistance effect in core-shell structured La0.7Sr0.3CoO3 nanoparticles
Core–shell structured La0.7Sr0.3CoO3 nanoparticles are synthesized and their magnetic and magneto-transport properties are investigated. In these core–shell La0.7Sr0.3CoO3 nanoparticles, the cores are single-crystalline and ferromagnetic, whereas the shells are noncrystalline and predominantly param...
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| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/99189 http://hdl.handle.net/10220/10360 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Core–shell structured La0.7Sr0.3CoO3 nanoparticles are synthesized and their magnetic and magneto-transport properties are investigated. In these core–shell La0.7Sr0.3CoO3 nanoparticles, the cores are single-crystalline and ferromagnetic, whereas the shells are noncrystalline and predominantly paramagnetic. Moreover, the insulating-like shells can serve as a good spin tunneling barrier. Therefore, in such a special core–shell structure, the spin-polarized interparticle tunneling is improved due to the existence of shells, which thus induces an enhanced low-field magnetoresistance effect. |
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