发明名称 |
Method for measuring coercivity in magnetic materials |
摘要 |
The coercivity of materials that are capable of supporting single wall magnetic domains are measured by an expedient and accurate technique. This technique requires that the material be placed in a static magnetic field having a gradual spatial gradient. Finger shaped domains produced in the material are then modulated by introduction of an AC magnetic field. Coercivity is obtained by measuring the distance the finger domains move due to the AC field.
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申请公布号 |
US4342962(A) |
申请公布日期 |
1982.08.03 |
申请号 |
US19800142013 |
申请日期 |
1980.04.21 |
申请人 |
BELL TELEPHONE LABORATORIES, INCORPORATED |
发明人 |
VELLA-COLEIRO, GEORGE P.;WOLFE, RAYMOND |
分类号 |
G01N27/72;G01R33/12;(IPC1-7):G01N27/72 |
主分类号 |
G01N27/72 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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