scholarly journals Synthesis and Characterization of B2O3Additive on Ni-Cu-Zn ferrites by Solid State Reaction Method

2017 ◽  
Vol 2 (9) ◽  
pp. 54
Author(s):  
Abdul Gofur ◽  
Alamgir Hossain ◽  
Shibendra Shekher Sikder ◽  
Dilip Kumar Saha
Keyword(s):  
Solid State ◽  
Magnetic Materials ◽  
Grain Growth ◽  
Solid State Reaction ◽  
Magnetic Behavior ◽  
Solid State Reaction Method ◽  
Initial Permeability ◽  
Electromagnetic Properties ◽  
Flat Profile ◽  
Bi2o3 Content

Ni-Cu-Zn ferrites are well-known technological magnetic materials used for manufacturing of multilayer chip inductor and applications in various electrical devices. The work is focused on the persuade of substitutions and sintering additive B2O3 on structural, transport and electromagnetic properties of Ni-Cu-Zn ferrites. The composition Ni0.28Cu0.10Zn0.62Fe2O4 + x wt. % where x= 0.2 to 0.8 for V2O5 was prepared by using the solid state reaction technique sintered at 1200oC with 6 hours holding time. Lattice parameters of Ni0.28Cu0.10Zn0.62Fe2O4 + x wt. % Bi2O3 are slightly decrease with increase x content. The grain growth by increasing the additives Bi2O3 content inter diffusion as results after > 0.4wt. % Bi2O3 content abnormal grain growth. Curie temperature (Tc) decreases continuously with increase of doped Bi2O3 additives in ferrite samples. The magnetization process all the samples are soft magnetic behavior of magnetic materials. Initial permeability (µi) decreases with increasing doped Bi2O3 content in ferrite samples and hence the highest value of quality factor is found for x = 0.4 within the range 20 kHz to 2MHz. The µi shows the flat profile from 1 kHz to 4MHz indicating frequency stability for all the ferrite samples. The visible grain growth indicates the improved electromagnetic properties.  DC resistivity decreases with increasing temperature shows the semiconducting nature of the sample. With increasing the frequency, the dielectric constant is found to decrease continuously and remain almost frequency independent at higher frequency range.

scholarly journals Effect of Bi2O3 content on the microstructure and electrical properties of SrBi2Nb2O9 piezoelectric ceramics

RSC Advances ◽  
2018 ◽  
Vol 8 (28) ◽  
pp. 15613-15620 ◽  
Author(s):  
Xiaochun He ◽  
Ruiqing Chu ◽  
Zhijun Xu ◽  
Zhongran Yao ◽  
Jigong Hao
Keyword(s):  
Solid State ◽  
Electrical Properties ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Lead Free ◽  
Molar Ratio ◽  
Conventional Solid State Reaction ◽  
Reaction Method ◽  
Lead Free Ceramics ◽  
Bi2o3 Content

Lead-free ceramics, SrBi2Nb2O9–xBi2O3 (SBN–xBi), with different Bi contents of which the molar ratio, n(Sr) : n(Bi) : n(Nb), is 1 : 2(1 + x/2) : 2 (x = −0.05, 0.0, 0.05, 0.10), were prepared by conventional solid-state reaction method.

Effects of Gd3+-Substitution on the Structure and Magnetic Properties of Multi-Doped YIG Ferrites

2014 ◽  
Vol 926-930 ◽  
pp. 329-332
Author(s):  
Jian Xin Zhao ◽  
Hong Qing Zhou ◽  
Mei Sheng Wang
Keyword(s):  
Magnetic Properties ◽  
Solid State ◽  
Saturation Magnetization ◽  
Spin Wave ◽  
Solid State Reaction ◽  
Temperature Stability ◽  
Solid State Reaction Method ◽  
Electromagnetic Properties ◽  
Reaction Method ◽  
Ferromagnetic Resonance Linewidth

Y2.20-xCa0.80GdxV0.40In0.15Fe4.45O12 garnet ferrite samples were prepared by solid-state reaction method, the effect of Gd-substitution on the microstructure and electromagnetic properties of YIG were systematically investigated. The results show that the substitution of Gd3+ makes the Ms~T curve more flat which improve the temperature stability of saturation magnetization; meanwhile, it appreciably increases the ferromagnetic resonance linewidth and spin wave linewidth.

Synthesis and Electromagnetic Properties of Ca2MTeO6 (M = Mn, Co, Mg)

2006 ◽  
Vol 45 ◽  
pp. 2572-2575 ◽  
Author(s):  
Yue Jin Shan ◽  
Yoko Kanai ◽  
Keitaro Tezuka ◽  
Hideo Imoto
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Effective Magnetic Moment ◽  
Room Temperature ◽  
Solid State Reaction Method ◽  
Electromagnetic Properties ◽  
Reaction Method ◽  
Manganese Ion ◽  
Electronic Conductivities ◽  
Perovskite Type

Ordered perovskite-type oxides, Ca2MTeO6 (M = Mn, Co, Mg), were synthesized by a solid-state reaction method. All of samples belonged to space group P21/n and were insulators at room temperature. However, their electronic conductivities tended large gradually with a rise of temperature. Ca2MnTeO6 and Ca2CoTeO6 showed anti-ferromagnetism, and their Neel temperatures were 10 K and 7 K, respectively. The effective magnetic moment of manganese ion was 5.8 μB while its valence was bivalence in Ca2MnTeO6.

Fabrication and Properties of Zinc Silicate Phosphors through Solid State Reaction

2010 ◽  
Vol 160-162 ◽  
pp. 594-598
Author(s):  
Guo Jian Jiang ◽  
Jia Yue Xu ◽  
Hui Shen ◽  
Yan Zhang ◽  
Lin He Xu ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Emission Peak ◽  
Zinc Silicate ◽  
Red Phosphor ◽  
Reaction Method ◽  
Long Afterglow ◽  
Luminescent Mechanism ◽  
Silicate Phosphors

Zinc silicate-based (Zn2SiO4:Eu3+) long afterglow phosphors were produced by solid state reaction method. The effects of borax and Eu2O3 additive on the properties of fabricated products have been studied. The results show that, there is not much difference in phase compositions within the borax additive amount; however, their SEM morphologies are different. Borax additive can increase the grain size of the product. Some sintering phenomena could be observed in the sample with Eu2O3 addition. The fluorescence spectroscopy results indicate that, the emission peak of the sample with Eu3+ additive located at 612nm, which may be a good candidate for red phosphor applications. The luminescent mechanism of Zn2SiO4:Eu3+ is also discussed.

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