富载流子Zn/sub - 1-x/ in /sub -x/ Co/sub 0.075/O的无铁磁性和强轨道耦合

INTERMAG Asia 2005. Digests of the IEEE International Magnetics Conference, 2005. Pub Date : 2005-04-04 DOI:10.1109/INTMAG.2005.1463818

X. Wang, G. Peleckis, S. Dou

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引用次数: 0

摘要

采用草酸盐快速分解技术制备了Zn/sub 1-x/In/sub x/Co/sub 0.075/O (0.010/spl les/x/spl les/0.020)稀释磁性半导体多晶样品。用x射线衍射技术分析了相纯度，并用Rietveld精细化技术对其结构进行了细化。用两点探针技术在295 K下测量了抛光球团的体积电导率。利用磁性能测量系统对其磁性能进行了分析。样品显示出顺磁性，在高温范围内居里-魏斯拟合得到Co离子的有效磁矩。研究了外加磁场引起的磁化行为。获得了较高的流动载流子浓度，但样品中未观察到铁磁性。

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Absence of ferromagnetism and strong orbital coupling in carrier rich Zn/sub 1-x/In/sub x/Co/sub 0.075/O

Polycrystalline samples of Zn/sub 1-x/In/sub x/Co/sub 0.075/O (0.010/spl les/x/spl les/0.020) diluted magnetic semiconductors were prepared by the rapid oxalate decomposition technique. Phase purity is analyzed by means of X-ray diffraction technique and structures are refined by Rietveld refinement technique. Bulk conductivity of the polished pellets was measured by two-point probe technique at 295 K. Magnetic properties were analyzed with magnetic property measurement system. Samples show paramagnetic behavior and Curie-Weiss fitting at high temperature range gave effective magnetic moment of Co ions. Magnetization behavior caused by applied magnetic field was also investigated. High itinerant carrier concentration was achieved but no ferromagnetism was observed in the samples.

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来源期刊

INTERMAG Asia 2005. Digests of the IEEE International Magnetics Conference, 2005.

CiteScore

0.50

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0.00%

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