发明名称 |
Magnetostrictive element having optimized bias-field-dependent resonant frequency characteristic |
摘要 |
A magnetostrictive element for use in a magnetomechanical marker has a resonant frequency characteristic that is at a minimum at a bias field level corresponding to the operating point of the magnetomechanical marker. The magnetostrictive element has a magnetomechanical coupling factor k in the range 0.28 to 0.4 at the operating point. The magnetostrictive element is formed by applying current-annealing to an iron-nickel-cobalt based amorphous metal ribbon, or by cross-field annealing an iron-nickel-cobalt alloy that includes a few percent chromium and/or niobium. |
申请公布号 |
AU6238398(A) |
申请公布日期 |
1998.09.08 |
申请号 |
AU19980062383 |
申请日期 |
1998.02.04 |
申请人 |
SENSORMATIC ELECTRONICS CORPORATION |
发明人 |
MING-REN LIAN;NEN-CHIN LIU;KEVIN R. COFFEY;RICHARD COPELAND;WING HO;ROBERT C. O'HANDLEY |
分类号 |
G01V3/00;G01V15/00;G08B13/24 |
主分类号 |
G01V3/00 |
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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