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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/65269

    Title: 銅氧化物奈米顆粒中一價銅對磁化強度的影響;Effects of Copper(II) oxide nano particle on magnatization.
    Authors: 林正鈞;Lin,Cheng-Chun
    Contributors: 物理學系
    Keywords: ;奈米顆粒;磁化強度
    Date: 2014-07-17
    Issue Date: 2014-10-15 14:48:08 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 此次實驗,採用熱蒸鍍冷凝法製備Cu140101、Cu140102以及Cu140104三組奈米顆粒樣品。使用 X-ray diffraction 探測三組樣品的繞射譜圖,透過Find it軟體,找出樣品Cu140101和Cu140102中具有Cu、Cu2O、CuO三種成分,樣品Cu140104中具有Cu和CuO兩種成分。再使用GSAS結構精算軟體,精算出三組樣品的各個成分質量比。透過繞射譜圖,使用積分寬法和共同體積函數二種方式精算出各個成分的粒徑大小。藉由GSAS精算得到各個成分的體積比,與共同體積函數中數量分布的體積比互相對照,推測三組樣品大多不為核殼結構。
    將此三組奈米顆粒樣品,委託國立東華大學奈米科技研究中心,使用超導量子干涉儀量測奈米顆粒的磁性,實驗項目有:隨外加磁場的變化,磁化強度的變化、隨著環境溫度的變化,磁化強度的變化。藉由實驗數據,分析出三組樣品皆是由順磁性和反鐵磁性所主導,透過公式的擬合,可以得到三個參數,分別是飽和磁化強度 〖(M〗_s)、磁矩〖 (μ〗_p)和反鐵磁磁化率〖 (χ〗_AFM),分別對這三個參數作探討,以及推測三個參數和樣品的成分質量比之間的關係。
    ;Use the gas condensation method to produce three nano-particle samples. Put samples in the X-ray diffraction machine to detect the profiles. Through the Find it software to find out the components in the samples, and use the GSAS software to fit these profiles. Then, we can get the component’s mass percentage. We can determine the nano-particles’s size by common volume function and intergral breadth method. Then, we can compare the GSAS’s result and the size by common volume function to surmise whether the nano-particle is core-shell model or not ?
    Take these three nano-particle samples to Nanotechnology Research Center in the National Dong Wha University to determine the magnetic. The experiments are determining the magnetization at different applied magnetic fields and temperatures. Use these datas to realize there are paramagnetic and antiferromagnetic properties in the nano-particles. Use the function to fit the M-H curve, and we will get the saturation 〖(M〗_s)、magnetic moment 〖(μ〗_p) and antiferromagnetic susceptibility〖 (χ〗_AFM) variables. Then, I will surmise these three variables and the components’ relationship.
    Appears in Collections:[物理研究所] 博碩士論文

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