| 光谱学与光谱分析 |
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| Magnetic Properties and Transport Behaviors in Double Doped La0.67+1.33xSr0.33-1.33xMn1-xMgxO3 System |
| CAI Zhi-rang1，TONG Wei2，ZHANG Meng2，ZHANG Bei2，LIU Ning1，2，ZHANG Yu-heng2 |
1. Materials Research Laboratory，Suzhou College，Suzhou 234000，China
2. Structure Research Laboratory，University of Science and Technology of China，Hefei 230026，China |
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Abstract The M-T curves, M-H curves, ESR curves, infrared spectrum, Raman spectrum, ρ-T curves and MR-T curves of La0.67+1.33xSr0.33-1.33xMn1-xMgxO3(0.00≤x≤0.25) were studied. The experiment pointed out that all samples exhibit a paramagnetic-ferromagnetic(PM-FM) transition associated with metallic-insulating(MI) transition in the low doping region, which does not occur in the heavy doping zone. The authors suggest that this behavior is attributed to the difference between the Jahn-Teller distortion of the Mn3+ ion neighboring Mg2+ and that of the Mn3+ ion non-neighboring Mg2+, which is confirmed by the IR and Raman spectra. The anomalous transport behavior is dominated by the differerent Jahn-Teller distortion.
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Received: 2004-08-08
Accepted: 2004-12-21
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Corresponding Authors:
CAI Zhi-rang
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| Cite this article: |
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CAI Zhi-rang,TONG Wei,ZHANG Meng, et al. Magnetic Properties and Transport Behaviors in Double Doped La0.67+1.33xSr0.33-1.33xMn1-xMgxO3 System [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(04): 481-486.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2005/V25/I04/481 |
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