Figures of merit of magnetostrictive single crystal iron–gallium alloys for actuator and sensor applications
Figures of merit of magnetostrictive single crystal iron–gallium alloys for actuator and sensor applications
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DOI：
10.1016/j.jmmm.2009.07.067
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发表时间：
2009-12
影响因子：
2.7
通讯作者：
S. Datta;J. Atulasimha;A. Flatau
中科院分区：
文献类型：
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作者：
S. Datta;J. Atulasimha;A. Flatau
研究了含16、17.5、19、24.7和29at%镓的< 100 >取向铁镓单晶合金的能量密度、磁力耦合因子和无因次感测量规因子随应力和磁场的变化规律。为了估计这些量，在不同的准静态应力和磁场条件下对样品进行了表征。实验行为采用基于能量的非线性方法建模。利用实验数据和模型模拟计算材料的磁导率、压磁应变系数（d33）、逆压磁系数（应力敏感性，d*33）和杨氏模量等参数。利用这些量得到了能量密度、磁力耦合因子和感应计因子作为磁力条件的函数。最大能量密度约为3kJ/m3，磁力耦合系数大于0.75，感测量程系数约为103。
Energy density, magnetomechanical coupling factor and a dimensionless sensing gage factor of 〈100〉 oriented single crystal iron–gallium alloys with 16, 17.5, 19, 24.7 and 29at% gallium were studied as functions of stress and magnetic field. To estimate these quantities, the samples were characterized under different quasi-static stress and magnetic field conditions. The experimental behavior was modeled using an energy-based non-linear approach. Both the experimental data and the model simulations were used to calculate material parameters such as magnetic permeability, piezo-magnetic strain coefficient (d33), inverse piezo-magnetic coefficient (stress sensitivity, d*33) and Young's modulus in the material. These quantities were used to obtain energy density, magnetomechanical coupling factor and sensing gage factor as functions of magnetomechanical conditions. Maximum energy density of around 3kJ/m3, magnetomechanical coupling factor higher than 0.75 and sensing gage factor on the order of 103were calculated.