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Studies of La- and Pr-driven reverse distortion of FeO6 octahedral structure, magnetic properties and hyperfine interaction of BiFeO3 powder

机译:BIFEO3粉末FEO6八面体结构,磁性和高浓缩相互作用的LA-和PR驱动的反畸形研究

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摘要

The Bi1-x-yLaxPryFeO3 (x = 0 and 0.05; y = 0, 0.10, 0.15 and 0.20) (BLPFO) powders were prepared using a hydrothermal method. The lattice structure of the samples was characterized by X-ray diffraction, which revealed an increase in the lattice constant of the doped samples evidencing the substitution of Bi by La and Pr ions. Raman spectroscopy was used to further analyse the structural distortion in the samples. Scanning electron microscopy was used to characterize the morphology of the samples. The atomic concentrations (%) of La and Pr elements in the samples were detected by Energy Dispersive X-ray spectroscopy. The ferromagnetism of the samples increased with the increase in La and Pr co-doping concentration as observed by vibrating sample magnetometry at room temperature. The evidence of reverse distortion of FeO6 octahedral structure in the La and Pr co-doped samples was revealed by the Mossbauer spectra parameters: Is, Qs, H, Gamma, chi(2) and area ratio (A(1)/A(2)) of two sextets.
机译:使用水热法制制备Bi1-X-YlaxpryFeO 3(X = 0和0.05; Y = 0,0.10,0.15和0.20)(BLPFO)粉末。样品的晶格结构的特征在于X射线衍射,这揭示了掺杂样品的晶格常数增加,其证明了La和Pr离子的取代的替代。使用拉曼光谱法进一步分析样品中的结构变形。扫描电子显微镜用于表征样品的形态。通过能量分散X射线光谱检测样品中的La和Pr元素的原子浓度(%)。样品的铁磁性随着通过在室温下振动样​​品磁体观察而观察到的La和Pr共掺杂浓度的增加而增加。 Mossbauer光谱参数揭示了La和Pr共掺杂样品中FeO6八面体结构的逆变形的证据:QS,H,γ,Chi(2)和面积比(A(1)/ A(2 ))两个六分子。

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  • 来源
    《RSC Advances》 |2018年第22期|共9页
  • 作者单位

    China Three Gorges Univ Coll Mech &

    Power Engn Yichang 443002 Peoples R China;

    China Three Gorges Univ Coll Mech &

    Power Engn Yichang 443002 Peoples R China;

    China Three Gorges Univ Coll Mech &

    Power Engn Yichang 443002 Peoples R China;

    China Three Gorges Univ Coll Mech &

    Power Engn Yichang 443002 Peoples R China;

    China Three Gorges Univ Coll Mech &

    Power Engn Yichang 443002 Peoples R China;

    Wuhan Univ Sch Phys &

    Technol Minist Educ Key Lab Artificial Micro &

    Nanomat Wuhan 430072 Hubei Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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