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Sn 和Cu摻雜對(duì)Zn0.98Fe0.02O塊材樣品磁性的影響
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鄭州輕工業(yè)學(xué)院,鄭州輕工業(yè)學(xué)院

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國(guó)家杰出青年科學(xué)基金


The comparative study on magnetic properties of Zn0.98Fe0.02O bulk samples with additional Cu or Sn doping
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Zhengzhou University of light industry,Zhengzhou University of light industry,

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    摘要:

    采用共沉淀法在600oC制備了Sn 和Cu摻雜的Zn0.98Fe0.02O多晶塊材樣品。X射線衍射分析結(jié)果顯示：所有的樣品均為單相，具有ZnO纖鋅礦結(jié)構(gòu)。M-T曲線顯示Sn摻雜嚴(yán)重削弱了系統(tǒng)鐵磁性，而Cu摻雜則增強(qiáng)了系統(tǒng)鐵磁性。這個(gè)結(jié)果與磁極化子模型一致，額外的Sn摻雜降低了系統(tǒng)中的空穴濃度，凍結(jié)了樣品中的鐵磁耦合作用。

    Abstract:

    Polycrystalline bulk samples Zn0.98Fe0.02O doped with additional Sn or Cu have been fabricated at 600oC by a coprecipitation method. The XRD structure analysis shows that all samples are of single phase with the ZnO-like wurtzite structure. X-ray photoelectron spectroscopy indicates an oxidation state of 4 for Sn，while a mixed state of 1 and 2 for Cu. It is found that Zn0.98Fe0.02O without additional doping shows weak ferromagnetism at room temperature. Cu doping has induced a light increase of magnetization in low temperature of 10 K, while Sn doping has seriously suppressed the ferromagnetism in whole temperature range. This result is consistent with bound magnetic polaron model relative to hole carriers.

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常同欽,王永強(qiáng). Sn 和Cu摻雜對(duì)Zn0.98Fe0.02O塊材樣品磁性的影響[J].稀有金屬材料與工程,2016,45(2):277~281.[Chang Tongqin, Wang Yongqiang. The comparative study on magnetic properties of Zn0.98Fe0.02O bulk samples with additional Cu or Sn doping[J]. Rare Metal Materials and Engineering,2016,45(2):277~281.]
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  • 收稿日期:2014-01-09
  • 最后修改日期:2014-07-16
  • 錄用日期:2014-08-12
  • 在線發(fā)布日期: 2016-07-15
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