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    • 1. 发明授权
    • Magnetic characteristics measuring method and system
    • 磁特性测量方法和系统
    • US07541805B2
    • 2009-06-02
    • US11693476
    • 2007-03-29
    • Masaki MitoKunihiko IrieJunpei YamadaSeishi TakagiHiroyuki Deguchi
    • Masaki MitoKunihiko IrieJunpei YamadaSeishi TakagiHiroyuki Deguchi
    • G01R33/035G01N27/72
    • G01R33/0356
    • A magnetic characteristics measurement system includes a superconducting quantum interference device which detects a magnetization of a sample located in the vicinity of a superconducting pickup coil and outputs an electrical signal representing the magnetization. A coil is disposed to surround the superconducting pickup coil and is connected to an AC power supply so as to generate an alternating magnetic field. The AC signal output from the superconducting quantum interference device is sampled by use of an A/D converter which is operable in an audio frequency range and outputs a digital signal corresponding to the AC signal. Phase adjustment is performed so as to optimally correct a time shift of the digital signal in relation to a reference voltage signal. The phase-adjusted signal is subjected to Fourier transformation processing so as to detect harmonic components as magnetic characteristics.
    • 磁特性测量系统包括超导量子干涉装置,其检测位于超导拾波线圈附近的样品的磁化,并输出表示磁化强度的电信号。 线圈设置成围绕超导拾波线圈并连接到AC电源以产生交变磁场。 从超导量子干涉装置输出的AC信号通过使用可在音频范​​围工作的A / D转换器进行采样,并输出与AC信号对应的数字信号。 执行相位调整以便最佳地校正数字信号相对于参考电压信号的时移。 对相位调整信号进行傅立叶变换处理,以便检测作为磁特性的谐波分量。
    • 2. 发明申请
    • MAGNETIC CHARACTERISTICS MEASURING METHOD AND SYSTEM
    • 磁特性测量方法与系统
    • US20080074110A1
    • 2008-03-27
    • US11693476
    • 2007-03-29
    • Masaki MitoKunihiko IrieJunpei YamadaSeishi TakagiHiroyuki Deguchi
    • Masaki MitoKunihiko IrieJunpei YamadaSeishi TakagiHiroyuki Deguchi
    • G01R33/035
    • G01R33/0356
    • A magnetic characteristics measurement system includes a superconducting quantum interference device which detects a magnetization of a sample located in the vicinity of a superconducting pickup coil and outputs an electrical signal representing the magnetization. A coil is disposed to surround the superconducting pickup coil and is connected to an AC power supply so as to generate an alternating magnetic field. The AC signal output from the superconducting quantum interference device is sampled by use of an A/D converter which is operable in an audio frequency range and outputs a digital signal corresponding to the AC signal. Phase adjustment is performed so as to optimally correct a time shift of the digital signal in relation to a reference voltage signal. The phase-adjusted signal is subjected to Fourier transformation processing so as to detect harmonic components as magnetic characteristics.
    • 磁特性测量系统包括超导量子干涉装置,其检测位于超导拾波线圈附近的样品的磁化,并输出表示磁化强度的电信号。 线圈设置成围绕超导拾波线圈并连接到AC电源以产生交变磁场。 从超导量子干涉装置输出的AC信号通过使用可在音频范​​围工作的A / D转换器进行采样,并输出与AC信号对应的数字信号。 执行相位调整以便最佳地校正数字信号相对于参考电压信号的时移。 对相位调整信号进行傅立叶变换处理,以便检测作为磁特性的谐波分量。