CN101747030A - Magneto-electricity composite material with huge dielectric constant and high magnetic conductivity and preparation method thereof - Google Patents

Magneto-electricity composite material with huge dielectric constant and high magnetic conductivity and preparation method thereof Download PDF

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CN101747030A
CN101747030A CN200910254522A CN200910254522A CN101747030A CN 101747030 A CN101747030 A CN 101747030A CN 200910254522 A CN200910254522 A CN 200910254522A CN 200910254522 A CN200910254522 A CN 200910254522A CN 101747030 A CN101747030 A CN 101747030A
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dielectric constant
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杨海波
林营
王芬
朱建锋
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Shaanxi University of Science and Technology
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Shaanxi University of Science and Technology
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Abstract

The invention relates to a magneto-electricity composite material with huge dielectric constant and high magnetic conductivity and a preparation method thereof; Ni0.8Zn0.2Fe2O4 and Ba0.6Sr0.4TiO3 power are mixed uniformly to obtain the mixture according to the volume ratio of Ni0.8Zn0.2Fe2O4/(1-x)Ba0.6Sr0.4TiO3, wherein x is more than or equal to 0.6 and is less than or equal to 0.9; wherein, PVA adhesives are added for pelleting, the mixture is sieved by a 60-mesh screen cloth and a 120-mesh screen cloth, so as to obtain the mixed powder of needed composite material; finally, the mixed powder of the composite material is compression-molded according to needs, the temperature is kept for 4 hours at 550 DEG C, and then the mixed powder is sintered for 0.5-2 hours at 1300-1350 DEG C for forming porcelain, so as to obtain the magneto-electricity composite material with huge dielectric constant and high magnetic conductivity; the dielectric constant of the magneto-electricity composite material with huge dielectric constant and high magnetic conductivity is 63000-156000 under 100Hz, and the magnetic conductivity thereof is 5.3-29 under 10MHz.

Description

Has magnetic electric compound material of huge dielectric constant and high magnetic permeability and preparation method thereof
Technical field
The invention belongs to material science, relate to a kind of magnetic electric compound material and preparation method thereof with huge dielectric constant and high magnetic permeability.
Background technology
Along with electronic industry is more and more higher for the requirement of integrated level, often on very little chip integrated components and parts number in necessarily.Therefore comprise that the microminiaturization and the miniaturization of the components and parts of electrical condenser are inexorable trends.And the big more material of effective dielectric constant takies identical resource and can obtain bigger electric capacity, thereby satisfies the function on the various circuit.Therefore, the huge dielectric constant material just can use less resources, takies volume still less.Therefore, research and develop out huge dielectric constant material efficiently and crucial meaning is arranged for the development of large-scale integrated circuit technology.In addition, along with the develop rapidly of information and radio communication technology, the size of electron device is more and more littler, and integrated level is more and more higher.This just requires electronic material to have multi-functional characteristic, for example, and magnetic dielectric properties, magneto-optical property etc.In order to satisfy the requirement of multi-functional components and parts, people just prepare the magnetic electric compound material aspect and have carried out many research work.These matrix materials have electric capacity and inductance characteristic simultaneously, can be used to prepare compact filter, antenna, EMI suppressor etc.The CaCu that has the material of huge dielectric constant at present 3Ti 4O 12Though but do not have magnetic Deng having high-k.Still there is not at present a kind of magnetic electric compound material that had both had huge dielectric constant and high magnetic permeability.
Summary of the invention
The object of the present invention is to provide a kind of preparation technology simply to have magnetic electric compound material of huge dielectric constant and high magnetic permeability and preparation method thereof.
For achieving the above object, the preparation method that the present invention adopts is:
1) preparation Ni 0.8Zn 0.2Fe 2O 4Powder: press chemical general formula Ni 0.8Zn 0.2Fe 2O 4, take by weighing analytically pure NiO, ZnO and Fe 2O 3Preparation back ball milling 4 hours, oven dry is sieved then, and briquetting 1170 ℃ of pre-burnings 3 hours, is crossed 120 mesh sieves with gained bulk sample pulverizing back and is obtained Ni 0.8Zn 0.2Fe 2O 4Powder;
2) preparation Ba 0.6Sr 0.4TiO 3Powder: press chemical general formula Ba 0.6Sr 0.4TiO 3, take by weighing analytically pure BaCO 3, SrCO 3And TiO 2Preparation back ball milling 4 hours, oven dry is sieved then, and briquetting through 1150 ℃ of pre-burnings 3 hours, is crossed 120 mesh sieves after then the gained bulk sample being pulverized and is obtained Ba 0.6Sr 0.4TiO 3Powder;
3) press xNi 0.8Zn 0.2Fe 2O 4/ (1-x) Ba 0.6Sr 0.4TiO 3Volume ratio with Ni 0.8Zn 0.2Fe 2O 4And Ba 0.6Sr 0.4TiO 3Powder mix compound, 0.6≤x≤0.9 wherein;
4) the PVA tackiness agent granulation of adding mixture quality umber 8%～15% is sieved through 60 orders and 120 eye mesh screens, obtains the mixed powder of required matrix material; Described PVA tackiness agent employing mass concentration is 5% polyvinyl alcohol water solution;
5) last, with the mixed powder compression moulding on demand of matrix material,, be incubated 4 hours and get rid of tackiness agent PVA at 550 ℃, again at 0.5～2 hour one-tenth of 1300～1350 ℃ of following sintering porcelain, promptly obtain having the magnetic electric compound material of huge dielectric constant and high magnetic permeability.
Zhi Bei described composition expression formula with magnetic electric compound material of huge dielectric constant and high magnetic permeability is according to the method described above: xNi 0.8Zn 0.2Fe 2O 4/ (1-x) Ba 0.6Sr 0.4TiO 3, wherein x is Ni 0.8Zn 0.2Fe 2O 4Percent by volume, and 0.6≤x≤0.9, this matrix material specific inductivity under 100Hz is 63000～156000, magnetic permeability is 5.3～29 under 10MHz.
Description of drawings
Fig. 1 is for working as Ni 0.8Zn 0.2Fe 2O 4Volume ratio be 60%, Ba 0.6Sr 0.4TiO 3Volume ratio be the dielectric properties of 40% o'clock matrix material;
Fig. 2 is for working as Ni 0.8Zn 0.2Fe 2O 4Volume ratio be 70%, Ba 0.6Sr 0.4TiO 3Volume ratio be the dielectric properties of 30% o'clock matrix material;
Fig. 3 is for working as Ni 0.8Zn 0.2Fe 2O 4Volume ratio be 80%, Ba 0.6Sr 0.4TiO 3Volume ratio be the dielectric properties of 20% o'clock matrix material;
Fig. 4 is for working as Ni 0.8Zn 0.2Fe 2O 4Volume ratio be 90%, Ba 0.6Sr 0.4TiO 3Volume ratio be the dielectric properties of 10% o'clock matrix material;
Fig. 5 is for working as Ni 0.8Zn 0.2Fe 2O 4Volume ratio be 60%, Ba 0.6Sr 0.4TiO 3Volume ratio be the magnetic property of 40% o'clock matrix material;
Fig. 6 is for working as Ni 0.8Zn 0.2Fe 2O 4Volume ratio be 70%, Ba 0.6Sr 0.4TiO 3Volume ratio be the magnetic property of 30% o'clock matrix material;
Fig. 7 is for working as Ni 0.8Zn 0.2Fe 2O 4Volume ratio be 80%, Ba 0.6Sr 0.4TiO 3Volume ratio be the magnetic property of 20% o'clock matrix material;
Fig. 8 is for working as Ni 0.8Zn 0.2Fe 2O 4Volume ratio be 90%, Ba 0.6Sr 0.4TiO 3Volume ratio be the magnetic property of 10% o'clock matrix material.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Embodiment 1: preparation Ni 0.8Zn 0.2Fe 2O 4Powder: press chemical general formula Ni 0.8Zn 0.2Fe 2O 4, take by weighing analytically pure NiO, ZnO and Fe 2O 3Preparation back ball milling 4 hours, oven dry is sieved then, and briquetting 1170 ℃ of pre-burnings 3 hours, is crossed 120 mesh sieves with gained bulk sample pulverizing back and is obtained Ni 0.8Zn 0.2Fe 2O 4Powder; Preparation Ba 0.6Sr 0.4TiO 3Powder: press chemical general formula Ba 0.6Sr 0.4TiO 3, take by weighing analytically pure BaCO 3, SrCO 3And TiO 2Preparation back ball milling 4 hours, oven dry is sieved then, and briquetting through 1150 ℃ of pre-burnings 3 hours, is crossed 120 mesh sieves after then the gained bulk sample being pulverized and is obtained Ba 0.6Sr 0.4TiO 3Powder; Press 0.6Ni again 0.8Zn 0.2Fe 2O 4/ 0.4Ba 0.6Sr 0.4TiO 3Volume percent with Ni 0.8Zn 0.2Fe 2O 4And Ba 0.6Sr 0.4TiO 3Powder mix compound; Secondly, add the PVA tackiness agent granulation of mixture quality umber 15%, sieve, obtain the mixed powder of required matrix material through 60 orders and 120 eye mesh screens; Described PVA tackiness agent employing mass concentration is 5% polyvinyl alcohol water solution; At last,,, be incubated 4 hours and get rid of tackiness agent PVA, became porcelain in 2 hours at 1350 ℃ of following sintering again, promptly obtain having the magnetic electric compound material of huge dielectric constant and high magnetic permeability at 550 ℃ with the mixed powder compression moulding on demand of matrix material.The dielectric properties of this matrix material are seen Fig. 1, and magnetic property is seen Fig. 5.
Embodiment 2: preparation Ni 0.8Zn 0.2Fe 2O 4Powder: press chemical general formula Ni 0.8Zn 0.2Fe 2O 4, take by weighing analytically pure NiO, ZnO and Fe 2O 3Preparation back ball milling 4 hours, oven dry is sieved then, and briquetting 1170 ℃ of pre-burnings 3 hours, is crossed 120 mesh sieves with gained bulk sample pulverizing back and is obtained Ni 0.8Zn 0.2Fe 2O 4Powder; Preparation Ba 0.6Sr 0.4TiO 3Powder: press chemical general formula Ba 0.6Sr 0.4TiO 3, take by weighing analytically pure BaCO 3, SrCO 3And TiO 2Preparation back ball milling 4 hours, oven dry is sieved then, and briquetting through 1150 ℃ of pre-burnings 3 hours, is crossed 120 mesh sieves after then the gained bulk sample being pulverized and is obtained Ba 0.6Sr 0.4TiO 3Powder; Press 0.7Ni 0.8Zn 0.2Fe 2O 4/ 0.3Ba 0.6Sr 0.4TiO 3Volume percent with Ni 0.8Zn 0.2Fe 2O 4And Ba 0.6Sr 0.4TiO 3Powder mix compound; Secondly, add the PVA tackiness agent granulation of mixture quality umber 12%, sieve, obtain the mixed powder of required matrix material through 60 orders and 120 eye mesh screens; Described PVA tackiness agent employing mass concentration is 5% polyvinyl alcohol water solution; At last,,, be incubated 4 hours and get rid of tackiness agent PVA, became porcelain in 1.5 hours at 1320 ℃ of following sintering again, promptly obtain having the magnetic electric compound material of huge dielectric constant and high magnetic permeability at 550 ℃ with the mixed powder compression moulding on demand of matrix material.The dielectric properties of this matrix material are seen Fig. 2, and magnetic property is seen Fig. 6.
Embodiment 3: preparation Ni 0.8Zn 0.2Fe 2O 4Powder: press chemical general formula Ni 0.8Zn 0.2Fe 2O 4, take by weighing analytically pure NiO, ZnO and Fe 2O 3Preparation back ball milling 4 hours, oven dry is sieved then, and briquetting 1170 ℃ of pre-burnings 3 hours, is crossed 120 mesh sieves with gained bulk sample pulverizing back and is obtained Ni 0.8Zn 0.2Fe 2O 4Powder; Preparation Ba 0.6Sr 0.4TiO 3Powder: press chemical general formula Ba 0.6Sr 0.4TiO 3, take by weighing analytically pure BaCO 3, SrCO 3And TiO 2Preparation back ball milling 4 hours, oven dry is sieved then, and briquetting through 1150 ℃ of pre-burnings 3 hours, is crossed 120 mesh sieves after then the gained bulk sample being pulverized and is obtained Ba 0.6Sr 0.4TiO 3Powder; Press 0.8Ni 0.8Zn 0.2Fe 2O 4/ 0.2Ba 0.6Sr 0.4TiO 3Volume percent with Ni 0.8Zn 0.2Fe 2O 4And Ba 0.6Sr 0.4TiO 3Powder mix compound; Secondly, add the PVA tackiness agent granulation of mixture quality umber 8%, sieve, obtain the mixed powder of required matrix material through 60 orders and 120 eye mesh screens; Described PVA tackiness agent employing mass concentration is 5% polyvinyl alcohol water solution; At last,,, be incubated 4 hours and get rid of tackiness agent PVA, became porcelain in 1 hour at 1310 ℃ of following sintering again, promptly obtain having the magnetic electric compound material of huge dielectric constant and high magnetic permeability at 550 ℃ with the mixed powder compression moulding on demand of matrix material.The dielectric properties of this matrix material are seen Fig. 3, and magnetic property is seen Fig. 7.
Embodiment 4: preparation Ni 0.8Zn 0.2Fe 2O 4Powder: press chemical general formula Ni 0.8Zn 0.2Fe 2O 4, take by weighing analytically pure NiO, ZnO and Fe 2O 3Preparation back ball milling 4 hours, oven dry is sieved then, and briquetting 1170 ℃ of pre-burnings 3 hours, is crossed 120 mesh sieves with gained bulk sample pulverizing back and is obtained Ni 0.8Zn 0.2Fe 2O 4Powder; Preparation Ba 0.6Sr 0.4TiO 3Powder: press chemical general formula Ba 0.6Sr 0.4TiO 3, take by weighing analytically pure BaCO 3, SrCO 3And TiO 2Preparation back ball milling 4 hours, oven dry is sieved then, and briquetting through 1150 ℃ of pre-burnings 3 hours, is crossed 120 mesh sieves after then the gained bulk sample being pulverized and is obtained Ba 0.6Sr 0.4TiO 3Powder; Press 0.9Ni 0.8Zn 0.2Fe 2O 4/ 0.1Ba 0.6Sr 0.4TiO 3Volume percent with Ni 0.8Zn 0.2Fe 2O 4And Ba 0.6Sr 0.4TiO 3Powder mix compound; Secondly, add the PVA tackiness agent granulation of mixture quality umber 10%, sieve, obtain the mixed powder of required matrix material through 60 orders and 120 eye mesh screens; Described PVA tackiness agent employing mass concentration is 5% polyvinyl alcohol water solution; At last,,, be incubated 4 hours and get rid of tackiness agent PVA, became porcelain in 0.5 hour at 1300 ℃ of following sintering again, promptly obtain having the magnetic electric compound material of huge dielectric constant and high magnetic permeability at 550 ℃ with the mixed powder compression moulding on demand of matrix material.The dielectric properties of this matrix material are seen Fig. 4, and magnetic property is seen Fig. 8.

Claims (2)

1. have the preparation method of the magnetic electric compound material of huge dielectric constant and high magnetic permeability, it is characterized in that:
1) preparation Ni 0.8Zn 0.2Fe 2O 4Powder: press chemical general formula Ni 0.8Zn 0.2Fe 2O 4, take by weighing analytically pure NiO, ZnO and Fe 2O 3Preparation back ball milling 4 hours, oven dry is sieved then, and briquetting 1170 ℃ of pre-burnings 3 hours, is crossed 120 mesh sieves with gained bulk sample pulverizing back and is obtained Ni 0.8Zn 0.2Fe 2O 4Powder;
2) preparation Ba 0.6Sr 0.4TiO 3Powder: press chemical general formula Ba 0.6Sr 0.4TiO 3, take by weighing analytically pure BaCO 3, SrCO 3And TiO 2Preparation back ball milling 4 hours, oven dry is sieved then, and briquetting through 1150 ℃ of pre-burnings 3 hours, is crossed 120 mesh sieves after then the gained bulk sample being pulverized and is obtained Ba 0.6Sr 0.4TiO 3Powder;
3) press xNi 0.8Zn 0.2Fe 2O 4/ (1-x) Ba 0.6Sr 0.4TiO 3Volume ratio with Ni 0.8Zn 0.2Fe 2O 4And Ba 0.6Sr 0.4TiO 3Powder mix compound, 0.6≤x≤0.9 wherein;
4) the PVA tackiness agent granulation of adding mixture quality umber 8%～15% is sieved through 60 orders and 120 eye mesh screens, obtains the mixed powder of required matrix material; Described PVA tackiness agent employing mass concentration is 5% polyvinyl alcohol water solution;
5) last, with the mixed powder compression moulding on demand of matrix material,, be incubated 4 hours and get rid of tackiness agent PVA at 550 ℃, again at 0.5～2 hour one-tenth of 1300～1350 ℃ of following sintering porcelain, promptly obtain having the magnetic electric compound material of huge dielectric constant and high magnetic permeability.
2. magnetic electric compound material of making according to the described preparation method with magnetic electric compound material of huge dielectric constant and high magnetic permeability of claim 1 with huge dielectric constant and high magnetic permeability, it is characterized in that: described composition expression formula with magnetic electric compound material of huge dielectric constant and high magnetic permeability is: xNi 0.8Zn 0.2Fe 2O 4/ (1-x) Ba 0.6Sr 0.4TiO 3, wherein x is Ni 0.8Zn 0.2Fe 2O 4Percent by volume, and 0.6≤x≤0.9, this matrix material specific inductivity under 100Hz is 63000～156000, magnetic permeability is 5.3～29 under 10MHz.
CN200910254522A 2009-12-25 2009-12-25 Magneto-electricity composite material with huge dielectric constant and high magnetic conductivity and preparation method thereof Pending CN101747030A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102211927A (en) * 2011-03-16 2011-10-12 陕西科技大学 Magnetoelectric compound material with giant dielectric constant and high saturation magnetization intensity and preparation method thereof
CN102211928A (en) * 2011-03-16 2011-10-12 陕西科技大学 Magnetoelectric composite material with huge dielectric constant and high residual magnetization strength, and preparation method thereof
CN102633501A (en) * 2012-04-25 2012-08-15 陕西科技大学 Hexagonal barium titanate base magnetoelectric composite material and preparation method thereof
CN105916814A (en) * 2014-01-17 2016-08-31 沙特基础工业全球技术公司 Development of nickel-zinc ferrites and methods for preparing same using iron-oxide byproducts of steel industry
CN109678495A (en) * 2019-01-15 2019-04-26 陕西科技大学 A kind of BaTiO3-Sr2CoMoO6Magnetoelectric ceramic and preparation method thereof
CN111298934A (en) * 2019-11-24 2020-06-19 浙江省东阳市剑华磁业有限公司 Preforming method for sintering permanent magnetic ferrite
CN112851323A (en) * 2021-01-20 2021-05-28 广州远能科技有限公司 Microwave dielectric ceramic material with high magnetic conductivity and preparation method thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102211927A (en) * 2011-03-16 2011-10-12 陕西科技大学 Magnetoelectric compound material with giant dielectric constant and high saturation magnetization intensity and preparation method thereof
CN102211928A (en) * 2011-03-16 2011-10-12 陕西科技大学 Magnetoelectric composite material with huge dielectric constant and high residual magnetization strength, and preparation method thereof
CN102633501A (en) * 2012-04-25 2012-08-15 陕西科技大学 Hexagonal barium titanate base magnetoelectric composite material and preparation method thereof
CN105916814A (en) * 2014-01-17 2016-08-31 沙特基础工业全球技术公司 Development of nickel-zinc ferrites and methods for preparing same using iron-oxide byproducts of steel industry
CN109678495A (en) * 2019-01-15 2019-04-26 陕西科技大学 A kind of BaTiO3-Sr2CoMoO6Magnetoelectric ceramic and preparation method thereof
CN109678495B (en) * 2019-01-15 2021-09-07 陕西科技大学 BaTiO3-Sr2CoMoO6Magnetoelectric composite ceramic and preparation method thereof
CN111298934A (en) * 2019-11-24 2020-06-19 浙江省东阳市剑华磁业有限公司 Preforming method for sintering permanent magnetic ferrite
CN112851323A (en) * 2021-01-20 2021-05-28 广州远能科技有限公司 Microwave dielectric ceramic material with high magnetic conductivity and preparation method thereof
CN112851323B (en) * 2021-01-20 2022-01-14 新化嘉恒电子陶瓷有限责任公司 Microwave dielectric ceramic material with high magnetic conductivity and preparation method thereof

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Application publication date: 20100623