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

doi:10.1016/j.rinp.2018.07.038

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院合肥智能机械研究所

	Structural, magnetic, dielectric and high frequency response of synthesized rare earth doped bismuth nano garnets (BIG)
	Akhtar, Majid Niaz 1; Hussain, T.4; Khan, Muhammad Azhar 2; Ahmad, Mukhtar 3,4
刊名	RESULTS IN PHYSICS
	2018-09-01
卷号	10 页码:784-793
关键词	Bismuth nanogarnets Rare earth substitution X-ray diffraction High frequency measurements M-H loops
ISSN号	2211-3797
DOI	10.1016/j.rinp.2018.07.038
通讯作者	Akhtar, Majid Niaz(majidniazakhtar@mnsuet.edu.pk)
英文摘要	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.
WOS关键词	YTTRIUM-IRON-GARNET ; CITRATE PRECURSOR ROUTE ; SOL-GEL ROUTE ; HEXAGONAL FERRITES ; SPINEL FERRITES ; YIG SYSTEM ; Y3FE5O12 ; MULTIFERROICS ; NANOFERRITES ; CERAMICS
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000443868900119
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/38743]
专题	合肥物质科学研究院_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.Islamia Univ Bahawalpur, Dept Phys, Bahawalpur 63100, Pakistan 3.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Intelligent Machines, Nanomat & Environm Detect Lab, Hefei 230031, Anhui, Peoples R China 4.COMSATS Inst Informat Technol, Dept Phys, Lahore, Pakistan
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.