Al doped spinel and garnet nanostructured ferrites for microwave frequency C and X- band applications
Al doped spinel and garnet nanostructured ferrites for microwave frequency C and X- band applications
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DOI：
10.1016/j.jpcs.2018.08.007
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发表时间：
2018-12-01
影响因子：
4
通讯作者：
Khan, Muhammad Azhar
中科院分区：
文献类型：
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作者：
Akhtar, Majid Niaz;Saleem, Muhammad;Khan, Muhammad Azhar
尖晶石和石榴石纳米结构铁氧体已被用于各种潜在的应用。单相尖晶石和石榴石纳米铁素体在许多领域有着不同的应用。采用溶胶法制备了尖晶石结构的Ni-Zn （Ni0.5Zn0.3Al0.2Fe2O4）铁氧体和石榴石结构的YAIG （Y2.8Al0.2Fe5O12）铁氧体。对尖晶石和石榴石纳米铁素体进行了结构、形态和磁性研究。采用x射线衍射（XRD）、扫描电镜（SEM）和振动样品磁强计（VSM）分别对尖晶石和石榴石纳米铁素体的结构、形貌和磁性能进行了研究。XRD分析证实了晶型为尖晶石和石榴石纳米铁氧体。尖晶石纳米铁素体和石榴石纳米铁素体分别呈圆形和立方形态。利用磁滞回线测量了掺杂Al的spinet和石榴石纳米铁氧体的静磁特性（饱和度、剩余物、矫顽力和磁方度）。通过磁测量对掺铝尖晶石和石榴石纳米铁素体的初始磁导率、Q因子和磁损耗等动态磁性能进行了评价。低温制备的尖晶石和石榴石纳米铁氧体在工业和技术应用方面具有潜力，例如变压器、开关、铁芯、滤波器、海底测井、MLCI、微波吸收生物医学应用和微波频率（C和X）波段应用。
Spinel and garnet nanostructured ferrites have been used for various potential applications. Single phase spinel and garnet nanoferrites have been used for different applications in many fields. Ni-Zn (Ni0.5Zn0.3Al0.2Fe2O4) ferrite with spinel structure and YAIG (Y2.8Al0.2Fe5O12) ferrite with garnet structure were synthesized using solgel technique. The structural, morphological and magnetic studies were done for spinel and garnet nanoferrites. X-ray diffraction (XRD), scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM) were used to investigate the structural, morphological and magnetic properties of the spinel and garnet nanoferrites respectively. Single phase spinel and garnet nanocrystalline ferrites were confirmed from XRD analysis. Circular and cubic shape morphology was observed for spinel and garnet nanoferrites respectively. Static magnetic characteristics of the Al doped spinet and garnet nanoferrites (saturation, remanence, coercivity and magnetic squareness) were measured from the hysteresis loops. Dynamic magnetic properties such as initial permeability, Q factor and magnetic losses of the Al doped spinel and garnet nanoferrites were also evaluated from magnetic measurements. Spinel and garnet nanoferrites prepared at low temperature may have potential in industrial and technological applications e.g. transformers, switching, cores, filters, sea bed logging, MLCI's, microwave absorption bio medical applications and microwave frequency (C and X) band applications.