Study of the effect of Mn doping on the BiFeO3 system
Study of the effect of Mn doping on the BiFeO3 system
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DOI：
10.1088/0953-8984/19/13/136202
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发表时间：
2007-04-04
影响因子：
2.7
通讯作者：
Awasthi, A. M.
中科院分区：
文献类型：
--
作者：
Kothari, Deepti;Reddy, V. Raghavendra;Awasthi, A. M.
本文研究了一种Mn掺杂的磁电BiFeO3体系。利用x射线衍射（XRD）、扫描电子显微镜、能量色散x射线分析（EDX）、室温和高温M r ossbauer能谱、差示扫描量热法（DSC）、高温磁化、介电常数测量和x射线光电子能谱（XPS）对样品进行表征。XRD结果表明，BiFeO3为主要相，杂质相约为1 ~ 2%。EDX显示了Bi和Fe位置阳离子的等原子比。DSC分析表明，Mn的掺入降低了N的温度。利用M - r - ossbauer和XPS观察到铁以+ 3氧化态存在。锰掺杂后的样品具有反铁磁性。
In this work a Mn doped magnetoelectric BiFeO3 system is studied. Xray diffraction ( XRD), scanning electron microscopy, energy dispersive xray analysis ( EDX), M r ossbauer spectroscopy at room and high temperatures, differential scanning calorimetry ( DSC), high temperature magnetization, dielectric constant measurements and x- ray photoelectron spectroscopy ( XPS) are used to characterize the samples. The XRD result shows BiFeO3 as a major phase along with about 1 - 2% impurity phase. EDX shows the equi- atomic ratio of Bi and Fe site cations. Using DSC it is observed that the N eel temperature decreases with Mn doping. Using M r ossbauer and XPS it is observed that Fe exists in the + 3 oxidation state. The samples have an antiferromagnetic nature with Mn doping.