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          華中科技大學學報(自然科學版) 2020, Vol. 48 Issue (9): 7-11 DOI10.13245/j.hust.200903

          欄目:計算機與控制工程
          磁納米粒子磁矩分布信息的新型測量方法
          杜中州 , 秦江波 , 王丹丹 , 蘇日建
          鄭州輕工業大學計算機與通信工程學院,河南 鄭州 450002
          摘要 針對常規磁矩測量技術或儀器中存在的測量設備昂貴和耗時等缺點,提出了一種新型的磁納米粒子磁矩分布信息測量方法.依據郎之萬順磁理論研究一次諧波、三次諧波幅值信息與磁矩分布信息之間的耦合關系,構建測量模型并建立矩陣方程組,然后采用奇異值分解法求解矩陣方程反演得到磁納米粒子的磁矩分布信息.仿真分析了磁矩分布測量方法,并通過搭建的磁矩分布測量實驗系統,測量了磁納米粒子樣品的磁矩分布信息.仿真和實驗結果表明:該方法能夠快速準確獲取磁納米粒子的磁矩分布信息.
          關鍵詞 磁納米粒子 ;磁矩分布 ;郎之萬函數 ;奇次諧波幅值 ;奇異值分解 ;矩陣方程
          New method for measuring magnetic moment distribution of magnetic nanoparticles
          DU Zhongzhou , QIN Jiangbo , WANG Dandan , SU Rijian
          School of Computer and Communication Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China
          Abstract A new method for measuring magnetic moment distribution of magnetic nanoparticles was proposed to overcome the problems of high cost and time-consuming in conventional magnetic moment measurement techniques.Based on the Langevin function paramagnetic theory,the coupling relationship between the first and third harmonic amplitude and magnetic moment distribution was studied to construct the measurement mode,then the matrix equation was established.And the magnetic moment distribution of magnetic nanoparticles was calculated by using singular value decomposition method to solve the matrix equation.The magnetic moment distribution measurement method was simulated,and the magnetic moment distribution information of the magnetic nanoparticle samples was measured by the experimental system of magnetic moment distribution measurement.The results by simulation and experiment show that this method can quickly and accurately obtain the magnetic moment distribution of magnetic nanoparticles.
          Keywords magnetic nanoparticle ; magnetic moment distribution ; Langevin function ; odd harmonic amplitude ; singular value decomposition ; matrix equation
          基金資助國家自然科學基金資助項目(61803346,61773018);河南省科技攻關項目(192102310213)

          中圖分類號TH811;TP23
          文獻標志碼A
          文章編號1671-4512(2020)09-0007-05
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          文獻來源
          杜中州, 秦江波, 王丹丹, 蘇日建. 磁納米粒子磁矩分布信息的新型測量方法[J]. 華中科技大學學報(自然科學版), 2020, 48(9): 7-11
          DOI:10.13245/j.hust.200903
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