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vibrating sample magnetometer是什么意思,vibrating sample magnetometer的意思翻译、用法、同义词、例句

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常用词典

  • 振动试样磁力计,振动探针式磁强计

  • 例句

  • The magnetic properties were determined by vibrating sample magnetometer.

    用振动样品磁强计进行磁性测量。

  • The microstructure and magnetic properties were measured by X-ray diffraction (XRD), scanning probe microscope (SPM) and vibrating sample magnetometer (VSM).

    用X射线衍射仪、振动样品磁强计和扫描探针显微镜系统分析了上述样品的微结构和磁特性。

  • The Curie temperature and saturation magnetization of manganese-zinc ferrite were measured by using the electric bridge method, induced method and vibrating sample magnetometer (VCM).

    分别用电桥法、感应法和振动样品磁强计对锰锌铁氧体的居里温度和饱和磁化强度进行了测试。

  • The magnetic properties of the coating were measured by vibrating sample magnetometer(VSM).

    采用振动样品磁强计测试了镀层的磁性能。

  • The microstructure and crystallization behavior were stu***d by X-ray diffraction (XRD), differential thermal analysis (DTA), and vibrating sample magnetometer (VSM).

    采用X射线衍射分析(XRD)、差热分析(DTA)、磁性测量(VSM)等方法对合金的晶化行为和磁性能进行研究。

  • N2 adsorption, Powder X-ray diffraction, Scanning Electron Microscope(SEM) and vibrating-sample magnetometer have been widely used to characterize those materials.

    实验采用了N2吸附、粉末X-射线衍射、扫描电镜和振动样品磁强计等表征手段对材料的结构特性作了系统的研究。

  • In the thesis, the test deviation of the system was analyzed in details especially for the vibrating sample magnetometer.

    本文还对测试系统的误差进行了详细的分析,其中着重讨论了振动样品磁强计的测试误差。

  • The magnetic properties of the four kinds of products were investigated by vibrating sample magnetometer and the results indicated that all products were hard magnetic materials.

    用振动样品磁强计对上述四类产物的磁学性能做了初步研究,结果表明四类产物均为硬磁材料。

  • The structure, crystallite size and magnetic properties of powders were investigated by X-ray diffraction and vibrating sample magnetometer.

    利用X射线衍射仪和振动样品磁强计对样品的结构、晶粒尺寸和磁性进行了测量和分析。

  • The structure and magnetic properties of the film were investigated by means of X-ray diffraction and vibrating sample magnetometer .

    利用X射线衍射和振动样品磁强计对样品的结构和磁性进行研究。

  • The structure and magnetic properties of melt-spun ribbons with different Nd, Dy and Nb contents were investigated by X-ray diffraction (XRD) and vibrating sample magnetometer (VSM).

    用X射线衍射(XRD)和振动样品磁强计(VSM)测量了薄带的相结构和磁性能。

  • The material of nano iron particles dispersed in carbon shows the soft magnetic properties measured by vibrating sample magnetometer and can be used as magnetic recorder materials.

    作为对其性能的评价,对该纳米复合材料的磁性能进行了测试,结果表明它在常温下表现出典型的软磁性能。

  • The magnetic properties of the fibres were examined by vibrating sample magnetometer(VSM).

    采用振动样品磁强计(VSM)对纤维的磁性能进行了测试。

  • 专业解析

    振动样品磁强计(Vibrating Sample Magnetometer,简称VSM)是一种用于精确测量材料磁化强度的关键仪器。其核心原理基于法拉第电磁感应定律:当磁性样品在磁场中发生机械振动时,会在周围的探测线圈中感应出交变电压信号,该信号与样品的磁矩成正比。通过锁相放大器精确测量该电压,即可计算出材料的磁化强度。

    核心工作原理与组件:

    1. 样品振动:待测样品被固定于非磁性的样品杆末端,由驱动装置(如扬声器线圈或压电陶瓷)驱动,在垂直于磁场方向做小振幅(约1-2 mm)、固定频率(通常为几十至百赫兹)的周期性振动。
    2. 磁场环境:样品置于由电磁铁或超导磁体产生的均匀、可控的稳态磁场(H)中。
    3. 信号探测:对称绕制的探测线圈(通常为一对梯度线圈或鞍形线圈)放置在样品振动区域附近。样品磁矩的振动相当于一个交变的磁偶极子,根据法拉第定律($$varepsilon = -frac{dPhi_B}{dt}$$),会在探测线圈中产生与样品磁矩变化率成正比的感应电动势(ε)。
    4. 信号处理:感应信号极其微弱,需通过高灵敏度的锁相放大器进行检测。锁相放大器锁定样品振动的频率作为参考信号,能有效滤除噪声,精确提取出与样品磁矩(M)成正比的电压信号。

    主要优势与特点:

    典型应用领域: VSM广泛应用于材料科学、物理学和工程领域,用于表征:

    参考来源:

    1. 经典磁学教材对VSM原理的阐述:Chikazumi, S., & Graham, C. D. (2009). Physics of Ferromagnetism (2nd ed.). Oxford University Press. 详细介绍了电磁感应定律在磁矩测量中的应用 。
    2. 仪器综述文献:Foner, S. (1959). Versatile and Sensitive Vibrating-Sample Magnetometer. Review of Scientific Instruments, 30(7), 548–557. 这篇奠基性论文首次系统描述了VSM的设计和性能 。
    3. 材料科学应用期刊:Journal of Magnetism and Magnetic Materials 上大量研究论文使用VSM数据表征新材料性能,例如纳米颗粒的磁滞回线测量 。

    网络扩展资料

    振动样品磁强计(Vibrating Sample Magnetometer,简称VSM)是一种用于测量材料磁性的精密仪器。以下从定义、原理、应用等角度综合分析:

    1. 定义与功能
    VSM通过振动样品并检测其磁矩变化,实现对材料内禀磁特性的测量。它能测量体积磁化强度(M)、质量磁化强度(σ)、矫顽力(Hc)、剩磁(Mr)等参数,还可间接计算技术磁参量如饱和磁感应强度(Bs)和最大磁能积(BH)max。

    2. 工作原理

    3. 技术特点

    4. 应用领域
    涵盖铁磁、亚铁磁、反铁磁、顺磁及抗磁材料研究,包括:

    5. 优势与局限
    优势在于非破坏性测量和高灵敏度,但对超大尺寸样品或极端低温/高温环境的测量需特殊配置。

    如需更详细的技术参数或实验案例,可参考上海交通大学AEMD中心或科学指南针的测试说明。

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