CN102826842A - Multiferroic composite material with magneto-dielectric effect and preparation method thereof - Google Patents

Multiferroic composite material with magneto-dielectric effect and preparation method thereof Download PDF

Info

Publication number
CN102826842A
CN102826842A CN2012103499385A CN201210349938A CN102826842A CN 102826842 A CN102826842 A CN 102826842A CN 2012103499385 A CN2012103499385 A CN 2012103499385A CN 201210349938 A CN201210349938 A CN 201210349938A CN 102826842 A CN102826842 A CN 102826842A
Authority
CN
China
Prior art keywords
composite ceramic
ceramic material
dielectric effect
powder
hours
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2012103499385A
Other languages
Chinese (zh)
Inventor
李玲霞
韩叶梅
夏往所
任翔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin University
Original Assignee
Tianjin University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tianjin University filed Critical Tianjin University
Priority to CN2012103499385A priority Critical patent/CN102826842A/en
Publication of CN102826842A publication Critical patent/CN102826842A/en
Pending legal-status Critical Current

Links

Abstract

The invention discloses a multiferroic composite ceramic material with a magneto-dielectric effect, the chemical formula of the material is NaNbO3-NiFe2O4, and the molar ratio is 1:1. The material is prepared by taking Na2CO3, Nb2O5, NiO and Fe2O3 as raw materials through adopting a solid phase method, carrying out material preparing and ball milling on the raw materials, burning an obtained object at a temperature of 900-1150 DEG C, carrying out compression moulding on the obtained object, and sintering the obtained object at a temperature of 1100-1200 DEG C. The multiferroic composite ceramic material disclosed by the invention has the advantages of good uniformity, small roughness, no micro-crack, stable performance, good electrical properties, magnetic properties, magneto-dielectric effect, and the like, and can be used for manufacturing integrated multifunctional magnetic/electrical parts; and the multiferroic composite ceramic material is simple in preparation process, non-toxic, small in pollution, and wide in application range.

Description

Has many iron property matrix material of magnetic dielectric effect and preparation method thereof
Technical field
The invention belongs to a kind of is the ceramic composition of characteristic with the composition, particularly a kind of unleaded many iron property particle composite ceramic material with magnetic dielectric coupling effect and preparation method thereof.
Background technology
Along with progress of science and technology, to miniaturization of devices, integrated require increasingly highly, therefore the novel material of development with two or more function has significant values.Multi-iron material since have simultaneously magnetic with electrically and intercouple, have in transmitter or transverter preparation field and to use widely and enjoy attention.The magnetic dielectric effect is the same with electronics ferroelectricity and magnetoelectric effect, is the important physical of multi-ferroic material.Magnetic dielectric effect MDE (Magneto-dielectric Effect) definition is: multi-ferroic material produces the sudden change of specific inductivity near Tc (ferromagnetic phase transition point), and the specific inductivity that perhaps below Tc, produces with changes of magnetic field changes.The sign formula of magnetic dielectric effect is:
MDE(%)=[ε(H)-ε(0)]/ε(0)×100%
Specific inductivity when ε (H) and ε (0) are respectively magnetic field and no magnetic field.The magnetic dielectric materials has all proposed series of new problems owing to relate to magnetics and electricity and both intersections to experiment and theoretical investigation.The magnetic dielectric materials had caused domestic and international expert's very big concern in recent years.
At present multi-iron material mainly is divided into single-phase compound multi-iron material and complex phase mixture multi-iron material, and relatively rareness and its Tc are low owing to have the single-phase many iron cpds of intrinsic, and the complex phase multi-iron material has caused extensive concern in recent years.First composite system BaTiO 3-CoFe 2O 4Be in the news in the seventies in 20th century, thereafter, a series of BaTiO 3, Pb (Zr 0.5Ti 0.5) O 3The composite material system is studied in succession.Has 4.54% magnetic dielectric effect (In " Effect of the piezomagnetic NiFe like the 0.15NFO-0.85PMN-PT matrix material of people such as ArifD Sheikh preparation 2O 4Phase on the piezoelectric Pb (Mg 1/3Nb 2/3) 0.67Ti 0.33O 3Phase in magnetoelectric composites ", Smart Mater.Struct., 2009,18:065014); People such as S.Y.Tan have obtained 0.5MgFe 2O 4-0.5BaTiO 3The magnetic dielectric effect of system under 7KOe magnetic field is 0.466% (In " Synthesis and characterization of composite MgFe 2O 4-BaTiO 3Multiferroic system ", J.Appl.Phys., 2008,103:094105).But these material systems contain toxic substance mostly, and environmental pollution is serious.Developing unleaded nontoxic new composite system has great importance.
Sodium columbate (NaNbO 3) show high spontaneous polarization, high-k and high tension electricity coefficient under the basic piezoelectric room temperature.In addition, spinel structure nickel ferrite (NiFe 2O 4) material is because of having high resistivity and high piezomagnetic coefficient is widely used in the exploitation of many iron property composite system.Many iron property composite ceramic material involved in the present invention is to propose first, does not see relevant report at present both at home and abroad.
Summary of the invention
The object of the invention provides a kind of unleaded, nontoxic novel many iron property composite system with good electric property, magnetic property and magnetic dielectric effect and preparation method thereof.The present invention is with Na 2CO 3, Nb 2O 5, NiO and Fe 2O 3Be raw material, adopt the solid phase method preparation to have many iron property composite ceramic material of magnetic dielectric effect.
The present invention is achieved through following technical scheme.
A kind of many iron property composite ceramic material with magnetic dielectric effect, its chemical formula is NaNbO 3-NiFe 2O 4, mol ratio is 1:1;
The preparation method of this composite ceramic material has following steps:
(1) with Na 2CO 3And Nb 2O 5, NiO and Fe 2O 3Press stoichiometric equation NaNbO 3And NiFe 2O 4, mol ratio is that 1:1 prepares burden; With material: deionized water: the mass ratio of zirconium ball is that the ratio of 1:1:1.5 adds and places the polyester jar, ball milling 4 ~ 24 hours;
(2), cross 40 mesh sieves with 100～120 ℃ of oven dry in loft drier of the raw material behind step (1) ball milling;
(3) powder after step (2) is dried, sieved is put into moderate oven, in 900～1150 ℃ of pre-burnings, is incubated 2 ~ 8 hours;
(4) powder after step (3) pre-burning being added mass percent is that 8% ~ 10% paraffin carries out granulation as tackiness agent, crosses 80 mesh sieves, suppresses green compact with powder compressing machine;
(5) with the green compact of step (4) in 1100 ℃～1200 ℃ sintering, be incubated 2 ~ 8 hours, make many iron property composite ceramic material.
The ball milling of said step (1) adopts planetary ball mill, and rotating speed is 1000 rev/mins.
The pressure of the powder compressing machine of said step (4) is 4 ~ 8MPa.
The sintering temperature that said step (4) adopts is 1150 ℃.
The soaking time of said step (5) is 4 hours.
Compound multi-iron material of the present invention has good uniformity, roughness is little, non-microcracked; Stable performance, and have advantages such as good electric property, magnetic property and magnetic dielectric effect, sintering temperature is 1100 ~ 1200 ℃; Magnetic permeability is 1 ~ 2 (1MHz) under the 1GHz; Specific inductivity is 48 ~ 52 (1MHz), the magnetic dielectric imitate coefficient be 8～12% (1MHz, 3000Gauss).Can be used for making integrated multi-function magnetic/electrical part, preparation technology is simple, and is nontoxic, pollutes for a short time, has wide application field.
Embodiment
The present invention is with Na 2CO 3(analytical pure), Nb 2O 5(analytical pure), NiO (analytical pure), Fe 2O 3(analytical pure) is initial feed, prepares the many iron property matrix material with magnetic dielectric effect through solid phase method, and specific embodiment is following:
Embodiment 1
(1) with Na 2CO 3And Nb 2O 5, NiO and Fe 2O 3Press stoichiometric equation NaNbO 3And NiFe 2O 4Prepare burden NaNbO 3And NiFe 2O 4Mol ratio be 1:1, the mixed powder of 14g is put into the polyester jar, with material: deionized water: the mass ratio of zirconium ball is that the ratio of 1:1:1.5 adds in the polyester jar, and ball milling is 4 hours on planetary ball mill, and drum's speed of rotation is 1000 rev/mins;
(2) raw material behind the ball milling is placed loft drier,, cross 40 mesh sieves then in 120 ℃ of oven dry;
(3) powder after will drying, sieving is put into moderate oven, in 900 ℃ of pre-burnings, is incubated 4 hours;
(4) to add the quality percentage composition be that 8% paraffin wax binder is carried out granulation to the powder after the pre-burning, cross 80 mesh sieves after, use powder compressing machine under the pressure of 4MPa, powder to be pressed into diameter and be 20mm, thickness is the green compact of 5mm;
(5) with green compact at 1100 ℃ of sintering, be incubated 4 hours, make many iron property composite ceramic material with magnetic dielectric effect.
With the dielectric properties of goods through Agilent E4991 electric impedance analyzer, 4285LCR analyser and dependence test anchor clamps test resulting product, magnetic property and magnetic dielectric effect, concrete test result sees table 1 for details.
Embodiment 2
(1) with Na 2CO 3And Nb 2O 5, NiO and Fe 2O 3Press stoichiometric equation NaNbO 3And NiFe 2O 4Prepare burden NaNbO 3And NiFe 2O 4Mol ratio be 1:1, the mixed powder of 14g is put into the polyester jar, with material: deionized water: the mass ratio of zirconium ball is that the ratio of 1:1:1.5 adds in the polyester jar, and ball milling is 12 hours on planetary ball mill; Rotating speed is 1000 rev/mins;
(2) raw material behind the ball milling is placed loft drier,, cross 40 mesh sieves then in 100 ℃ of oven dry;
(3) powder after will drying, sieving is put into moderate oven, in 1150 ℃ of pre-burnings, is incubated 4 hours;
(4) to add the quality percentage composition be that 8% paraffin wax binder is carried out granulation to the powder after the pre-burning, cross 80 mesh sieves after, use powder compressing machine under the pressure of 4MPa, powder to be pressed into diameter and be 20mm, thickness is the green compact of 5mm;
(5) with green compact at 1100 ℃ of sintering, be incubated 8 hours, make many iron property composite ceramic material with magnetic dielectric effect.
With the dielectric properties of goods through Agilent E4991 electric impedance analyzer, 4285LCR analyser and dependence test anchor clamps test gained sample, magnetic property and magnetic dielectric effect, concrete test result sees table 1 for details.
Embodiment 3
(1) with Na 2CO 3And Nb 2O 5, NiO and Fe 2O 3Press stoichiometric equation NaNbO 3And NiFe 2O 4Prepare burden NaNbO 3And NiFe 2O 4Mol ratio be 1:1, the mixed powder of 14g is put into the polyester jar, with material: deionized water: the mass ratio of zirconium ball is that the ratio of 1:1:1.5 adds in the polyester jar, and ball milling is 24 hours on planetary ball mill; Rotating speed is 1000 rev/mins;
(2) raw material behind the ball milling places loft drier, in 120 ℃ of oven dry, then crosses 40 mesh sieves;
(3) powder after drying, sieving is put into moderate oven, in 1100 ℃ of pre-burnings, is incubated 6 hours;
(4) to add the quality percentage composition be that 8% paraffin wax binder is carried out granulation to the powder after the pre-burning, cross 80 mesh sieves after, use powder compressing machine under the pressure of 4MPa, powder to be pressed into diameter and be 20mm, thickness is the green compact of 5mm;
(5) with green compact at 1125 ℃ of sintering, be incubated 4 hours, make many iron property composite ceramic material with magnetic dielectric effect.
With the dielectric properties of goods through Agilent E4991 electric impedance analyzer, 4285LCR analyser and dependence test anchor clamps test gained sample, magnetic property and magnetic dielectric effect, concrete test result sees table 1 for details.
Embodiment 4
(1) with Na 2CO 3And Nb 2O 5, NiO and Fe 2O 3Press stoichiometric equation NaNbO 3And NiFe 2O 4Prepare burden NaNbO 3And NiFe 2O 4Mol ratio be 1:1, the mixed powder of 14g is put into the polyester jar, with material: deionized water: the mass ratio of zirconium ball is that the ratio of 1:1:1.5 adds in the polyester jar, and ball milling is 4 hours on planetary ball mill; Rotating speed is 1000 rev/mins;
(2) raw material behind the ball milling places loft drier, in 110 ℃ of oven dry, then crosses 40 mesh sieves;
(3) powder after drying, sieving is put into moderate oven, in 1100 ℃ of pre-burnings, is incubated 4 hours;
(4) to add the quality percentage composition be that 9% paraffin wax binder is carried out granulation to the powder after the pre-burning, cross 80 mesh sieves after, uses powder compressing machine under the pressure of 4MPa, powder to be pressed into diameter and is 20mm, thickness is the green compact of about 5mm;
(5) with green compact at 1150 ℃ of sintering, be incubated 6 hours, make many iron property composite ceramic material with magnetic dielectric effect.
With the dielectric properties of goods through Agilent E4991 electric impedance analyzer, 4285LCR analyser and dependence test anchor clamps test gained sample, magnetic property and magnetic dielectric effect, concrete test result sees table 1 for details.
Embodiment 5
(1) with Na 2CO 3And Nb 2O 5, NiO and Fe 2O 3Press stoichiometric equation NaNbO 3And NiFe 2O 4Prepare burden NaNbO 3And NiFe 2O 4Mol ratio be 1:1, the mixed powder of 14g is put into the polyester jar, with material: deionized water: the mass ratio of zirconium ball is that the ratio of 1:1:1.5 adds in the polyester jar, and ball milling is 6 hours on planetary ball mill; Rotating speed is 1000 rev/mins;
(2) raw material behind the ball milling places loft drier in 120 ℃ of oven dry, then crosses 80 mesh sieves;
(3) powder after drying, sieving is put into moderate oven, in 900 ℃ of pre-burnings, is incubated 4 hours;
(4) to add the quality percentage composition be that 10% paraffin wax binder is carried out granulation to the powder after the pre-burning, cross 80 mesh sieves after, uses powder compressing machine under the pressure of 4MPa, powder to be pressed into diameter and is 20mm, thickness is the green compact of about 5mm;
(5) with green compact at 1175 ℃ of sintering, be incubated 6 hours, make many iron property composite ceramic material with magnetic dielectric effect.
With the dielectric properties of goods through Agilent E4991 electric impedance analyzer, 4285LCR analyser and dependence test anchor clamps test gained sample, magnetic property and magnetic dielectric effect, concrete test result sees table 1 for details.
Embodiment 6
(1) with Na 2CO 3And Nb 2O 5, NiO and Fe 2O 3Press stoichiometric equation NaNbO 3And NiFe 2O 4Prepare burden NaNbO 3And NiFe 2O 4Mol ratio be 1:1, the mixed powder of 14g is put into the polyester jar, with material: deionized water: the mass ratio of zirconium ball is that the ratio of 1:1:1.5 adds in the polyester jar, and ball milling is 6 hours on planetary ball mill; Rotating speed is 1000 rev/mins;
(2) raw material behind the ball milling places loft drier in 120 ℃ of oven dry, then crosses 80 mesh sieves;
(3) powder after drying, sieving is put into moderate oven, in 900 ℃ of pre-burnings, is incubated 6 hours;
(4) to add the quality percentage composition be that 10% paraffin wax binder is carried out granulation to the powder after the pre-burning, cross 80 mesh sieves after, uses powder compressing machine under the pressure of 4MPa, powder to be pressed into diameter and is 20mm, thickness is the green compact of about 5mm;
(5) with green compact at 1200 ℃ of sintering, be incubated 4 hours, make many iron property composite ceramic material with magnetic dielectric effect.
With the dielectric properties of goods through Agilent E4991 electric impedance analyzer, 4285LCR analyser and dependence test anchor clamps test gained sample, magnetic property and magnetic dielectric effect, concrete test result sees table 1 for details.
Embodiment 7
(1) with Na 2CO 3And Nb 2O 5, NiO and Fe 2O 3Press stoichiometric equation NaNbO 3And NiFe 2O 4Prepare burden NaNbO 3And NiFe 2O 4Mol ratio be 1:1, the mixed powder of 14g is put into the polyester jar, with material: deionized water: the mass ratio of zirconium ball is that the ratio of 1:1:1.5 adds in the polyester jar, and ball milling is 6 hours on planetary ball mill; Rotating speed is 1000 rev/mins;
(2) raw material behind the ball milling places loft drier in 120 ℃ of oven dry, then crosses 80 mesh sieves;
(3) powder after drying, sieving is put into moderate oven, in 900 ℃ of pre-burnings, is incubated 4 hours;
(4) to add the quality percentage composition be that 10% paraffin wax binder is carried out granulation to the powder after the pre-burning, cross 80 mesh sieves after, uses powder compressing machine under the pressure of 4MPa, powder to be pressed into diameter and is 20mm, thickness is the green compact of about 5mm;
(5) with green compact at 1200 ℃ of sintering, be incubated 6 hours, make many iron property composite ceramic material with magnetic dielectric effect.
With the dielectric properties of goods through Agilent E4991 electric impedance analyzer, 4285LCR analyser and dependence test anchor clamps test gained sample, magnetic property and magnetic dielectric effect, concrete test result sees table 1 for details.
Embodiment 8
(1) with Na 2CO 3And Nb 2O 5, NiO and Fe 2O 3Press stoichiometric equation NaNbO 3And NiFe 2O 4Prepare burden NaNbO 3And NiFe 2O 4Mol ratio be 1:1, the mixed powder of 14g is put into the polyester jar, with material: deionized water: the mass ratio of zirconium ball is that the ratio of 1:1:1.5 adds in the polyester jar, and ball milling is 6 hours on planetary ball mill; Rotating speed is 1000 rev/mins;
(2) raw material behind the ball milling places loft drier in 120 ℃ of oven dry, then crosses 80 mesh sieves;
(3) powder after drying, sieving is put into moderate oven, in 900 ℃ of pre-burnings, is incubated 8 hours;
(4) to add the quality percentage composition be that 10% paraffin wax binder is carried out granulation to the powder after the pre-burning, cross 80 mesh sieves after, uses powder compressing machine under the pressure of 4MPa, powder to be pressed into diameter and is 20mm, thickness is the green compact of about 5mm;
(5) with green compact at 1200 ℃ of sintering, be incubated 8 hours, make many iron property composite ceramic material with magnetic dielectric effect.
With the dielectric properties of goods through Agilent E4991 electric impedance analyzer, 4285LCR analyser and dependence test anchor clamps test gained sample, magnetic property and magnetic dielectric effect, concrete test result sees table 1 for details.
Table 1
Figure BDA00002154362400051

Claims (5)

1. many iron property composite ceramic material with magnetic dielectric effect, its chemical formula is NaNbO 3-NiFe 2O 4, mol ratio is 1:1.
The preparation method of this composite ceramic material has following steps:
(1) with Na 2CO 3And Nb 2O 5, NiO and Fe 2O 3Press stoichiometric equation NaNbO 3And NiFe 2O 4, mol ratio is that 1:1 prepares burden; With material: deionized water: the mass ratio of zirconium ball is that the ratio of 1:1:1.5 adds and places the polyester jar, ball milling 4 ~ 24 hours;
(2), cross 40 mesh sieves with 100 ~ 120 ℃ of oven dry in loft drier of the raw material behind step (1) ball milling;
(3) powder after step (2) is dried, sieved is put into moderate oven, in 900 ~ 1150 ℃ of pre-burnings, is incubated 2 ~ 8 hours;
(4) powder after step (3) pre-burning being added mass percent is that 8% ~ 10% paraffin carries out granulation as tackiness agent, crosses 80 mesh sieves, suppresses green compact with powder compressing machine;
(5) with the green compact of step (4) in 1100 ℃ ~ 1200 ℃ sintering, be incubated 2 ~ 8 hours, make many iron property composite ceramic material.
2. according to the many iron property composite ceramic material with magnetic dielectric effect of claim 1, it is characterized in that the ball milling of said step (1) adopts planetary ball mill, rotating speed is 1000 rev/mins.
3. according to the many iron property composite ceramic material with magnetic dielectric effect of claim 1, it is characterized in that the pressure of the powder compressing machine of said step (4) is 4 ~ 8MPa.
4. according to the many iron property composite ceramic material with magnetic dielectric effect of claim 1, it is characterized in that the sintering temperature that said step (4) adopts is 1150 ℃.
5. according to the many iron property composite ceramic material with magnetic dielectric effect of claim 1, it is characterized in that the soaking time of said step (5) is 4 hours.
CN2012103499385A 2012-09-18 2012-09-18 Multiferroic composite material with magneto-dielectric effect and preparation method thereof Pending CN102826842A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012103499385A CN102826842A (en) 2012-09-18 2012-09-18 Multiferroic composite material with magneto-dielectric effect and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012103499385A CN102826842A (en) 2012-09-18 2012-09-18 Multiferroic composite material with magneto-dielectric effect and preparation method thereof

Publications (1)

Publication Number Publication Date
CN102826842A true CN102826842A (en) 2012-12-19

Family

ID=47330185

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012103499385A Pending CN102826842A (en) 2012-09-18 2012-09-18 Multiferroic composite material with magneto-dielectric effect and preparation method thereof

Country Status (1)

Country Link
CN (1) CN102826842A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2848281A1 (en) * 2013-09-16 2015-03-18 BIOTRONIK SE & Co. KG Electrode device for a medical implant, and medical implant comprising an electrode device
CN107078376A (en) * 2014-08-21 2017-08-18 罗杰斯公司 Using magnetic dielectric material, with channel spacing from multi-input/output antenna
CN112745115A (en) * 2021-01-11 2021-05-04 电子科技大学 Magnetostrictive material with high strain sensitivity in low magnetic field and preparation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102557635A (en) * 2011-12-22 2012-07-11 四川师范大学 Sodium niobate lithium tantalate series lead-free piezoelectric ceramic composite

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102557635A (en) * 2011-12-22 2012-07-11 四川师范大学 Sodium niobate lithium tantalate series lead-free piezoelectric ceramic composite

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
YAN MA ET AL.: "Enhanced multiferroic characteristics in NaNbO3-modified BiFeO3 ceramics", 《JOURNAL OF APPLIED PHYSICS》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2848281A1 (en) * 2013-09-16 2015-03-18 BIOTRONIK SE & Co. KG Electrode device for a medical implant, and medical implant comprising an electrode device
US9468756B2 (en) 2013-09-16 2016-10-18 Biotronik Se & Co. Kg Electrode device for a medical implant, and a medical implant comprising an electrode device
CN107078376A (en) * 2014-08-21 2017-08-18 罗杰斯公司 Using magnetic dielectric material, with channel spacing from multi-input/output antenna
CN112745115A (en) * 2021-01-11 2021-05-04 电子科技大学 Magnetostrictive material with high strain sensitivity in low magnetic field and preparation method thereof

Similar Documents

Publication Publication Date Title
CN102153343B (en) Method for preparing high Q-value magnesium titanate base microwave medium ceramics by adopting reactive sintering method
Zhang et al. Electromagnetic and microwave absorption performance of some transition metal doped La0. 7Sr0. 3Mn1− xTMxO3±δ (TM= Fe, Co or Ni)
CN103058643B (en) Mn-Zn soft magnetic ferrite material with high, temperature, high superposition and low power consumption, and preparation method of Mn-Zn soft magnetic ferrite material
CN104692795B (en) A kind of ultra-low loss magnesium titanate lithium microwave dielectric ceramic materials and preparation method thereof
CN101691297B (en) Ferrite/ceramic composite material and preparation method and application thereof
CN102690108A (en) Permanent magnetic ferrite production method and magnetic body thereof
CN105000877A (en) High-quality-factor temperature-stabilization type microwave dielectric material and preparation method thereof
Tang et al. Structure and electromagnetic behavior of BaFe12− 2x (Ni0. 8Ti0. 7) xO19− 0.8 x in the 2–12 GHz frequency range
CN103613369A (en) Silicate low-temperature co-fired ceramic substrate material and preparation method thereof
CN102826842A (en) Multiferroic composite material with magneto-dielectric effect and preparation method thereof
CN102850051B (en) YFeO3 base bi-phase magnetoelectricity composite material and preparation method thereof
CN103396117A (en) Low-temperature sintered strontium titanate energy-storing medium ceramic material and preparation method thereof
CN108975905A (en) A kind of xenogenesis oxide is co-doped with the preparation method of lithium titanate base microwave dielectric material
CN104944940A (en) Stable-temperature magnesium-titanate-base microwave dielectric ceramic and preparation method thereof
CN103030386B (en) Multiferroic ceramics with room-temperature highly ferromagnetic-ferroelectric and highly-magnetic dielectric effects and preparation method of multiferroic ceramics
CN106083034A (en) A kind of low-loss lithium magnesium titanium series microwave dielectric ceramic
CN103626485B (en) Production method of permanent magnetic ferrite pre-sintering material
CN102875129B (en) Spinel type solid solution medium ceramics materials with magnetic-dielectric functions and preparation method thereof
CN113121214A (en) Graphite tailing-based microwave dielectric ceramic material and preparation method thereof
Xie et al. Synthesis and electromagnetic properties of BaFe11. 92 (LaNd) 0.04 O19/titanium dioxide composites
CN106348756A (en) High-Q-value lithium-magnesium-niobium microwave dielectric ceramic
CN103332933B (en) Preparation method of LaAgMnO3/Ni2Z composite wave-absorbing material
CN102211928A (en) Magnetoelectric composite material with huge dielectric constant and high residual magnetization strength, and preparation method thereof
Anwar et al. Effect of sintering temperature on structural, electrical and dielectric parameters of Mn-Zn nano ferrites
CN107868397B (en) Composite material with weak negative dielectric constant and preparation method thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
AD01 Patent right deemed abandoned

Effective date of abandoning: 20121219

C20 Patent right or utility model deemed to be abandoned or is abandoned