Structural, magnetic, dielectric and high frequency response of synthesized rare earth doped bismuth nano garnets (BIG)

doi:10.1016/j.rinp.2018.07.038

	Structural, magnetic, dielectric and high frequency response of synthesized rare earth doped bismuth nano garnets (BIG)
	Akhtar, Majid Niaz 1; Hussain, T.2; Khan, Muhammad Azhar 3; Ahmad, Mukhtar 2,4
	2018-09-01
发表期刊	RESULTS IN PHYSICS
ISSN	2211-3797
通讯作者	Akhtar, Majid Niaz(majidniazakhtar@mnsuet.edu.pk)
摘要	Rare earth doped bismuth (Bi) iron garnets (BIG) having composition Bi3-xRxFe5O12 for x=1.5 (here R stands for rare earth elements like Y, Gd, Pr, Ho and Yb) have been studied in this work. The samples were prepared using sol-gel method. X-Ray diffraction (XRD), Scanning electron microscope (SEM), Fourier transform infrared spectroscope (FTIR), Vibrating sample magnetometer (VSM) and Vector network analyzer (VNA) were employed on the samples to evaluate the properties of the doped Bi nanogarnets. Single-phase garnet structure was confirmed through XRD and the crystallite sizes were found to be 66-73 nm, depending upon the type of rare earth ions. SEM images helped to observe the morphology and measurement of grain size of the doped Bi nanogarnets. Vibrational bands showed the presence of garnet phase and were confirmed through FTIR analysis. Detailed dynamic magnetic and dielectric properties were measured using VNA from 1 to 6 GHz. Real and imaginary part of the permittivity, permeability, dielectric and magnetic losses, ac conductivity, electric modulus and Q factor were calculated for the rare earth doped Bi nanoferrites. Gd doped Bi nanoferrites showed higher permittivity values whereas Pr doped show higher ac conductivity as compared to other samples. Yb doped Bi nanoferrites have Q factor values at 4.8 GHz. Static magnetic properties of the doped Bi nanogarnets were investigated using magnetic loops. Magnetic remanence (Mr) Saturation magnetization (Ms) and coercivity (Hc), Bohr magneton, anisotropy constant and initial permeability were also calculated. The dielectric and magnetic studies of the rare earth doped Bi nanogarnets suggested the applications of these rare earths doped nanogarnets for microwave devices and high frequency applications in GHz regime.
关键词	Bismuth nanogarnets Rare earth substitution X-ray diffraction High frequency measurements M-H loops
DOI	10.1016/j.rinp.2018.07.038
关键词[WOS]	YTTRIUM-IRON-GARNET ; CITRATE PRECURSOR ROUTE ; SOL-GEL ROUTE ; HEXAGONAL FERRITES ; SPINEL FERRITES ; YIG SYSTEM ; Y3FE5O12 ; MULTIFERROICS ; NANOFERRITES ; CERAMICS
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Multidisciplinary
WOS记录号	WOS:000443868900119
出版者	ELSEVIER SCIENCE BV
引用统计	被引频次：31[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/38743
专题	中科院合肥智能机械研究所
通讯作者	Akhtar, Majid Niaz
作者单位	1.MNSUET, Dept Phys, Multan 60000, Pakistan 2.COMSATS Inst Informat Technol, Dept Phys, Lahore, Pakistan 3.Islamia Univ Bahawalpur, Dept Phys, Bahawalpur 63100, Pakistan 4.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Intelligent Machines, Nanomat & Environm Detect Lab, Hefei 230031, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Akhtar, Majid Niaz,Hussain, T.,Khan, Muhammad Azhar,et al. Structural, magnetic, dielectric and high frequency response of synthesized rare earth doped bismuth nano garnets (BIG)[J]. RESULTS IN PHYSICS,2018,10:784-793.
APA	Akhtar, Majid Niaz,Hussain, T.,Khan, Muhammad Azhar,&Ahmad, Mukhtar.(2018).Structural, magnetic, dielectric and high frequency response of synthesized rare earth doped bismuth nano garnets (BIG).RESULTS IN PHYSICS,10,784-793.
MLA	Akhtar, Majid Niaz,et al."Structural, magnetic, dielectric and high frequency response of synthesized rare earth doped bismuth nano garnets (BIG)".RESULTS IN PHYSICS 10(2018):784-793.