Frequency multiplying behavior in a magnetoelectric unimorph

Frequency multiplying behavior in a magnetoelectric unimorph
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磁电单压电晶片的倍频行为

DOI:
10.1063/1.3678635
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发表时间:
2012-01
影响因子:
4
通讯作者:
Wei, Fulin
Wei, Fulin
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zhang, Wenhui;Yin, Ge;Cao, Jiangwei;Bai, Jianmin;Wei, Fulin

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我们观察到的磁电(ME)单压电晶片的倍频行为:这样的倍频信号产生时,输入频率(fin)的交流磁场(Hac)是约1/n(n表示整数)的机械共振频率(fr)的设备。当施加直流磁场(Hdc)时,我们观察到奇次和偶次谐波信号,而Hdc = 0时仅出现偶次谐波信号。这种现象是由于超磁致伸缩的非线性特性和磁电单晶中的机械共振现象共同作用的结果。
We observe frequency multiplying behavior in a magnetoelectric (ME) unimorph: such a frequency-multiplied signal is generated when the input frequency (fin) of an alternating current magnetic field (Hac) is around 1/n (n denotes integer) of the mechanical resonance frequency (fr) of the device. We observe both odd and even harmonic signals when a direct current magnetic field (Hdc) is applied, whereas only even harmonic signals arise for Hdc = 0. This behavior results from the combined effect of the nonlinear character of the Metglas magnetostriction and a mechanical resonance phenomenon in the magnetoelectric unimorph.
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