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vibrating sample magnetometer是什麼意思,vibrating sample magnetometer的意思翻譯、用法、同義詞、例句

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常用詞典

  • 振動試樣磁力計,振動探針式磁強計

  • 例句

  • The magnetic properties were determined by vibrating sample magnetometer.

    用振動樣品磁強計進行磁性測量。

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

    用X射線衍射儀、振動樣品磁強計和掃描探針顯微鏡系統分析了上述樣品的微結構和磁特性。

  • 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).

    分别用電橋法、感應法和振動樣品磁強計對錳鋅鐵氧體的居裡溫度和飽和磁化強度進行了測試。

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

    采用振動樣品磁強計測試了鍍層的磁性能。

  • 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射線衍射分析(XRD)、差熱分析(DTA)、磁性測量(VSM)等方法對合金的晶化行為和磁性能進行研究。

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

    實驗采用了N2吸附、粉末X-射線衍射、掃描電鏡和振動樣品磁強計等表征手段對材料的結構特性作了系統的研究。

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

    本文還對測試系統的誤差進行了詳細的分析,其中着重讨論了振動樣品磁強計的測試誤差。

  • 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.

    用振動樣品磁強計對上述四類産物的磁學性能做了初步研究,結果表明四類産物均為硬磁材料。

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

    利用X射線衍射儀和振動樣品磁強計對樣品的結構、晶粒尺寸和磁性進行了測量和分析。

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

    利用X射線衍射和振動樣品磁強計對樣品的結構和磁性進行研究。

  • 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射線衍射(XRD)和振動樣品磁強計(VSM)測量了薄帶的相結構和磁性能。

  • 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.

    作為對其性能的評價,對該納米複合材料的磁性能進行了測試,結果表明它在常溫下表現出典型的軟磁性能。

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

    采用振動樣品磁強計(VSM)對纖維的磁性能進行了測試。

  • 專業解析

    振動樣品磁強計(Vibrating Sample Magnetometer,簡稱VSM)是一種用于精确測量材料磁化強度的關鍵儀器。其核心原理基于法拉第電磁感應定律:當磁性樣品在磁場中發生機械振動時,會在周圍的探測線圈中感應出交變電壓信號,該信號與樣品的磁矩成正比。通過鎖相放大器精确測量該電壓,即可計算出材料的磁化強度。

    核心工作原理與組件:

    1. 樣品振動:待測樣品被固定于非磁性的樣品杆末端,由驅動裝置(如揚聲器線圈或壓電陶瓷)驅動,在垂直于磁場方向做小振幅(約1-2 mm)、固定頻率(通常為幾十至百赫茲)的周期性振動。
    2. 磁場環境:樣品置于由電磁鐵或超導磁體産生的均勻、可控的穩态磁場(H)中。
    3. 信號探測:對稱繞制的探測線圈(通常為一對梯度線圈或鞍形線圈)放置在樣品振動區域附近。樣品磁矩的振動相當于一個交變的磁偶極子,根據法拉第定律($$varepsilon = -frac{dPhi_B}{dt}$$),會在探測線圈中産生與樣品磁矩變化率成正比的感應電動勢(ε)。
    4. 信號處理:感應信號極其微弱,需通過高靈敏度的鎖相放大器進行檢測。鎖相放大器鎖定樣品振動的頻率作為參考信號,能有效濾除噪聲,精确提取出與樣品磁矩(M)成正比的電壓信號。

    主要優勢與特點:

    典型應用領域: VSM廣泛應用于材料科學、物理學和工程領域,用于表征:

    參考來源:

    1. 經典磁學教材對VSM原理的闡述:Chikazumi, S., & Graham, C. D. (2009). Physics of Ferromagnetism (2nd ed.). Oxford University Press. 詳細介紹了電磁感應定律在磁矩測量中的應用 。
    2. 儀器綜述文獻:Foner, S. (1959). Versatile and Sensitive Vibrating-Sample Magnetometer. Review of Scientific Instruments, 30(7), 548–557. 這篇奠基性論文首次系統描述了VSM的設計和性能 。
    3. 材料科學應用期刊:Journal of Magnetism and Magnetic Materials 上大量研究論文使用VSM數據表征新材料性能,例如納米顆粒的磁滞回線測量 。

    網絡擴展資料

    振動樣品磁強計(Vibrating Sample Magnetometer,簡稱VSM)是一種用于測量材料磁性的精密儀器。以下從定義、原理、應用等角度綜合分析:

    1. 定義與功能
    VSM通過振動樣品并檢測其磁矩變化,實現對材料内禀磁特性的測量。它能測量體積磁化強度(M)、質量磁化強度(σ)、矯頑力(Hc)、剩磁(Mr)等參數,還可間接計算技術磁參量如飽和磁感應強度(Bs)和最大磁能積(BH)max。

    2. 工作原理

    3. 技術特點

    4. 應用領域
    涵蓋鐵磁、亞鐵磁、反鐵磁、順磁及抗磁材料研究,包括:

    5. 優勢與局限
    優勢在于非破壞性測量和高靈敏度,但對超大尺寸樣品或極端低溫/高溫環境的測量需特殊配置。

    如需更詳細的技術參數或實驗案例,可參考上海交通大學AEMD中心或科學指南針的測試說明。

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