Modulation of microstructure and magnetic properties of Sr-doped CdO films
Modulation of microstructure and magnetic properties of Sr-doped CdO films
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DOI：
10.1080/02670844.2017.1390905
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发表时间：
2018-09
影响因子：
2.8
通讯作者：
D. Antosoly;S. Ilangovan;V. Nagarethinam;A. R. Balu
中科院分区：
文献类型：
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作者：
D. Antosoly;S. Ilangovan;V. Nagarethinam;A. R. Balu
采用喷雾法在玻璃衬底上制备了纯CdO和Sr 2+掺杂的CdO（SCO）薄膜。本文研究了Sr掺杂浓度对薄膜结构、形貌、光学和磁性的影响。纯的和Sr掺杂的CdO薄膜表现出强烈的（111）择优生长。从TEM图像中可以看出，所有样品都具有纳米尺寸的晶粒。增加的透明度和带隙弯曲观察掺杂的薄膜。所有薄膜的电阻率都在10 - 2 ohm cm的量级。光致发光的研究证实存在本征缺陷的薄膜。缺陷介导的铁磁行为观察掺杂的薄膜。所得到的结果推断，Sr掺杂强烈影响喷雾沉积的氧化镉薄膜的物理性质。
Pure and Sr2+-doped CdO (SCO) thin films were deposited on glass substrates by the spray technique using perfume atomiser. The effect of Sr doping concentration on the structural, morphological, optical and magnetic properties was studied and the results obtained are reported in this paper. Pure and Sr-doped CdO thin films exhibit a strong (1 1 1) preferential growth. Nanosized grains are evinced from the TEM images for all the samples. Increased transparency and band gap bowing are observed for the doped films. All the films have an electrical resistivity in the order of 10−2 ohm cm. Photoluminescence studies confirm the presence of intrinsic defects on the films. Defects mediated ferromagnetic behaviour is observed for the doped films. The obtained results infer that Sr doping strongly influenced the physical properties of spray deposited CdO thin films.