| 학회 |
한국재료학회 |
| 학술대회 |
2009년 봄 (05/21 ~ 05/22, 무주리조트) |
| 권호 |
15권 1호 |
| 발표분야 |
전자재료 |
| 제목 |
Electrical transport properties and magnetoresistance of (La0.7 Sr0.3 MnO3)1−x/(CuFe2O4)x composites |
| 초록 |
The (La0.7Sr0.3MnO3)1−x/(CuFe2O4)x ,(x =0 ~ 0.15) composites were prepared by conventional solid state reaction method. We have investigated the structural, magnetic and electrical properties of (La0.7Sr0.3MnO3)1−x/(CuFe2O4)x composites using X-ray diffraction (XRD), thermal gravimetric analysis(TGA), scanning electron microscopy, field cooled dc magnetization and magnetoresistance(MR) measurements. The resistance measured as a function temperature demonstrates that all the samples display metal to semiconductor transition. The MR was measured in the presence of 5 kOe field. It clearly observed that The magnetoresistance (MR) effect is enhanced at a wide temperature range. To be short, the spin-polarized tunneling and the spin-dependent scattering may be helpful to the improved low-field magnetoresistance (LFMR) effect. |
| 저자 |
서용준, Shalendra Kumar, 김영주, 성창훈, 이찬규, 구본흔
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| 소속 |
창원대 |
| 키워드 |
(La0.7 Sr0.3 MnO3)1−x/(CuFe2O4)x composites; Grain boundary; LFMR; Spin-dependent scattering
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| E-Mail |
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