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Nanometer LiZn ferrite material

A ferrite material and nanotechnology, applied in the field of ferrite materials, can solve the problems of high loss of Li-based ferrite, affecting the performance of microwave phase shifters, amplitude-phase consistency and yield, and high solid-phase reaction temperature

Active Publication Date: 2015-07-22
ANHUI HUALIN MAGNETIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, due to the high loss of Li-based ferrite and high solid-state reaction temperature, the utilization rate and processability of the material are not ideal, and at the same time, the performance, amplitude-phase consistency, and yield of the microwave phase shifter are affected.

Method used

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  • Nanometer LiZn ferrite material
  • Nanometer LiZn ferrite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of nanometer LiZn ferrite material that present embodiment 1 proposes, each raw material is taken by following proportioning:

[0020] Fe(NO 3 ) 3 9H 2 O, Zn(NO 3 ) 2 ·6H 2 O, LiNO 3 、C 6 h 8 o 7 ·H 2 O. Bi 2 o 3 , where Fe(NO 3 ) 3 9H 2 O, Zn(NO 3 ) 2 ·6H 2 O, LiNO 3 The molar ratio is 46:6:7, with Fe(NO 3 ) 3 9H 2 O, Zn(NO 3 ) 2 ·6H 2 O, LiNO 3 NO of the three 3 - The sum of the moles is the basis, C 6 h 8 o 7 ·H 2 The mole fraction of O is 52%, with Fe(NO 3 ) 3 9H 2 O, Zn(NO 3 ) 2 ·6H 2 O, LiNO 3 、C 6 h 8 o 7 ·H 2 The sum of the quality of O four is the benchmark, Bi2 o 3 The mass fraction of is 0.65%;

[0021] According to above-mentioned raw material ratio, prepare described nanometer LiZn ferrite material according to the following steps:

[0022] S1: Fe(NO 3 ) 3 9H 2 O, Zn(NO 3 ) 2 ·6H 2 O, LiNO 3 Mix with water to prepare matrix solution;

[0023] S2: put C 6 h 8 o 7 ·H 2 O is mixed with water to pre...

Embodiment 2

[0028] A kind of nanometer LiZn ferrite material that present embodiment 2 proposes, each raw material is taken by following proportioning:

[0029] Fe(NO 3 ) 3 9H 2 O, Zn(NO 3 ) 2 ·6H 2 O, LiNO 3 、C 6 h 8 o 7 ·H 2 O. Bi 2 o 3 , where Fe(NO 3 ) 3 9H 2 O, Zn(NO 3 ) 2 ·6H 2 O, LiNO 3 The molar ratio is 48:7:8, with Fe(NO 3 ) 3 9H 2 O, Zn(NO 3 ) 2 ·6H 2 O, LiNO 3 NO of the three 3 - The sum of the moles is the basis, C 6 h 8 o 7 ·H 2 The mole fraction of O is 54%, with Fe(NO 3 ) 3 9H 2 O, Zn(NO 3 ) 2 ·6H 2 O, LiNO 3 、C 6 h 8 o 7 ·H 2 The sum of the quality of O four is the benchmark, Bi 2 o 3 The mass fraction is 0.7%;

[0030] According to above-mentioned raw material ratio, prepare described nanometer LiZn ferrite material according to the following steps:

[0031] S1: Fe(NO 3 ) 3 9H 2 O, Zn(NO 3 ) 2 ·6H 2 O, LiNO 3 Mix with water to prepare matrix solution;

[0032] S2: put C 6 h 8 o 7 ·H 2 O is mixed with water to prepa...

Embodiment 3

[0037] A kind of nanometer LiZn ferrite material that present embodiment 3 proposes, each raw material is taken by following proportioning:

[0038] Fe(NO 3 ) 3 9H 2 O, Zn(NO 3 ) 2 ·6H 2 O, LiNO 3 、C 6 h 8 o 7 ·H 2 O. Bi 2 o 3 , where Fe(NO 3 ) 3 9H 2 O, Zn(NO 3 ) 2 ·6H 2 O, LiNO 3 The molar ratio is 42:5:6, with Fe(NO 3 ) 3 9H 2 O, Zn(NO 3 ) 2 ·6H 2 O, LiNO 3 NO of the three 3 - The sum of the moles is the basis, C 6 h 8 o 7 ·H 2 The mole fraction of O is 48%, with Fe(NO 3 ) 3 9H 2 O, Zn(NO 3 ) 2 ·6H 2 O, LiNO 3 、C 6 h 8 o 7 ·H 2 The sum of the quality of O four is the benchmark, Bi 2 o 3 The mass fraction is 0.6%;

[0039] According to above-mentioned raw material ratio, prepare described nanometer LiZn ferrite material according to the following steps:

[0040] S1: Fe(NO 3 ) 3 9H 2 O, Zn(NO 3 ) 2 ·6H 2 O, LiNO 3 Mix with water to prepare matrix solution;

[0041] S2: put C 6 h 8 o 7 ·H 2 O is mixed with water to prepa...

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Abstract

The invention discloses a nanometer LiZn ferrite material. A mole ratio of Fe(NO3)3.9H2O to Zn(NO3)2.6H2O to LiNO3 is (42-48):(5-7):(6-8); a mole percentage of C6H8O7.H2O is 48-54% based on a mole sum of NO<3><-> of Fe(NO3)3.9H2O, Zn(NO3)2.6H2O and LiNO3; and the mass percentage of Bi2O3 is 0.6-0.7% based on a mass sum of Fe(NO3)3.9H2O, Zn(NO3)2.6H2O, LiNO3, and C6H8O7.H2O. The nanometer LiZn ferrite material is prepared by preparing a matrix solution from Fe(NO3)3.9H2O, Zn(NO3)2.6H2O, LiNO3, and water; preparing a complexing agent solution from C6H8O7.H2O and water; mixing the matrix solution and the complexing agent solution and adding Bi2O3; adjusting a pH value to obtain a mixed solution; stirring the mixed solution at a constant temperature to obtain sol; drying the sol to obtain xerogel; performing self-propagating combustion; and performing moulding and sintering.

Description

technical field [0001] The invention belongs to the technical field of ferrite materials, in particular to a nanometer LiZn ferrite material. Background technique [0002] Li-based ferrite has the advantage of high Curie temperature, therefore, its temperature stability is good, at the same time, the ratio of its magnetostriction coefficient to the magnetocrystalline anisotropy constant is also low, the hysteresis loop is rectangular, and the remanence Low sensitivity to stress, compared with other gyromagnetic materials, it has a good advantage in microwave phase shifters. In the prior art, due to the high loss of Li-based ferrite and high solid-state reaction temperature, the utilization rate and processability of the material are not ideal, and at the same time, the performance, amplitude-phase consistency, and yield of the microwave phase shifter are affected. . Therefore, it is necessary to improve the composition and preparation process of Li-based ferrite. Content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26C04B35/622
Inventor 沈宏江
Owner ANHUI HUALIN MAGNETIC TECH
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