Iron-cobalt alloy nano linear array permanent-magnetic film material and its preparation

A nanowire array, iron-cobalt alloy technology, applied in the application of magnetic films to substrates, and the magnetism of inorganic materials, can solve the problems of ignoring permanent magnetic film materials
CN1529330AInactive Publication Date: 2004-09-15NANJING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NANJING UNIV
Publication Date
2004-09-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

In the invention, pore templet in Nano alumina is prepared by method of electrochemic anode oxidation, and nano line array of ferrocobalt is prepared by method of electrochemic deposition. Diameter of line array of ferrocobalt is in 10nm-50nm, constituent of ferrocobalt is as CoxFe1-x , 20 more than or equal to 20 and less than or equal to 0.60. low temperature annealing of Nano line array of ferrocobalt obtained from electrochemic deposition obtains thin film material of permanent magnetism, performances of which are best when content of cobalt is 30%-40%, and diameter of Nano line is as 10nm-22nm.
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Description

1. Technical field

[0001] The invention relates to a composition and a preparation method of an iron-cobalt alloy nanowire array permanent magnet thin film material. 2. Background technology

[0002] Permanent magnetic thin films can be widely used in micro-motor systems, integrated electronic devices, magnetic heads and other fields, and use permanent magnetic thin films to form micro-motors, braking devices, micro-pumps and other devices. With the miniaturization of electronic devices, research on permanent magnetic thin films has received widespread attention and developed rapidly. The selection criteria for permanent magnetic films are 1) good magnetic properties: large magnetic energy product, high Curie temperature, H c and B r Has a low temperature coefficient. 2) It can be obtained by sputtering deposition and chemical deposition, and finally can be obtained by chemical deposition. 3) It has good environmental stability: good mechanical properties and oxidation r...

Claims

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