ES2164528B1 - PROCEDURE TO INCREASE THE COERCITIVITY OF A FERROMAGNETIC MATERIAL. - Google Patents

PROCEDURE TO INCREASE THE COERCITIVITY OF A FERROMAGNETIC MATERIAL.

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Publication number
ES2164528B1
ES2164528B1 ES9900869A ES9900869A ES2164528B1 ES 2164528 B1 ES2164528 B1 ES 2164528B1 ES 9900869 A ES9900869 A ES 9900869A ES 9900869 A ES9900869 A ES 9900869A ES 2164528 B1 ES2164528 B1 ES 2164528B1
Authority
ES
Spain
Prior art keywords
ferromagnetic material
increase
coercivity
procedure
temperature
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.)
Expired - Fee Related
Application number
ES9900869A
Other languages
Spanish (es)
Other versions
ES2164528A1 (en
Inventor
Sanmiquel Josep Nogues
Vinas Jordi Sort
Capdevila Xavier Amils
Dominguez Juan Santiago Munoz
Cornet Santiago Surinach
Marine Maria Dolores Baro
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.)
Universitat Autonoma de Barcelona UAB
Original Assignee
Universitat Autonoma de Barcelona UAB
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Filing date
Publication date
Application filed by Universitat Autonoma de Barcelona UAB filed Critical Universitat Autonoma de Barcelona UAB
Priority to ES9900869A priority Critical patent/ES2164528B1/en
Publication of ES2164528A1 publication Critical patent/ES2164528A1/en
Application granted granted Critical
Publication of ES2164528B1 publication Critical patent/ES2164528B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Hard Magnetic Materials (AREA)
  • Thin Magnetic Films (AREA)

Abstract

Procedimiento para aumentar la coercitividad de un material ferromagnético. Comprende: a) poner en contacto el material ferromagnético con un material antiferromagnético o con un material ferromagnético que tengan una temperatura crítica de Néel (del material antiferromagnético) o una temperatura crítica de Curie (del material ferromagnético) comprendida entre la temperatura ambiente y una temperatura inferior a la temperatura crítica de Curie del material ferromagnético cuya coercitividad se desea aumentar y b) acoplar magnéticamente los dos materiales mediante tratamientos térmicos en presencia de un campo magnético hasta obtener una imantación no nula del material ferromagnético cuya coercitividad se desea aumentar. Se consigue aumentar la coercitividad de un material ferromagnético con una aportación menor de energía.Procedure to increase the coercivity of a ferromagnetic material. It comprises: a) contacting the ferromagnetic material with an antiferromagnetic material or with a ferromagnetic material having a critical temperature of Néel (of the antiferromagnetic material) or a critical temperature of Curie (of the ferromagnetic material) between the ambient temperature and a temperature below the critical Curie temperature of the ferromagnetic material whose coercivity is to be increased and b) magnetically couple the two materials by means of heat treatments in the presence of a magnetic field until a non-zero magnetization of the ferromagnetic material whose coercivity is to be increased is obtained. It is possible to increase the coercivity of a ferromagnetic material with a smaller contribution of energy.

ES9900869A 1999-04-27 1999-04-27 PROCEDURE TO INCREASE THE COERCITIVITY OF A FERROMAGNETIC MATERIAL. Expired - Fee Related ES2164528B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES9900869A ES2164528B1 (en) 1999-04-27 1999-04-27 PROCEDURE TO INCREASE THE COERCITIVITY OF A FERROMAGNETIC MATERIAL.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9900869A ES2164528B1 (en) 1999-04-27 1999-04-27 PROCEDURE TO INCREASE THE COERCITIVITY OF A FERROMAGNETIC MATERIAL.

Publications (2)

Publication Number Publication Date
ES2164528A1 ES2164528A1 (en) 2002-02-16
ES2164528B1 true ES2164528B1 (en) 2003-10-16

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ID=8308165

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9900869A Expired - Fee Related ES2164528B1 (en) 1999-04-27 1999-04-27 PROCEDURE TO INCREASE THE COERCITIVITY OF A FERROMAGNETIC MATERIAL.

Country Status (1)

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ES (1) ES2164528B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0338597B1 (en) * 1984-02-28 1995-01-11 Sumitomo Special Metals Co., Ltd. Permanent magnets
EP0284832A1 (en) * 1987-03-20 1988-10-05 Siemens Aktiengesellschaft Manufacturing process for an anisotropic magnetic material based on Fe, B and a rare-earth metal
JPH0247209A (en) * 1988-08-04 1990-02-16 Sakai Chem Ind Co Ltd Production of fine platy barium ferrite powder

Also Published As

Publication number Publication date
ES2164528A1 (en) 2002-02-16

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