淡江大學機構典藏:Item 987654321/51787
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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/51787


    Title: BaCoNiS系統摻雜鈣鍶之物性研究
    Other Titles: Properties of Ca, Sr doped BaCoNiS system
    Authors: 雷昀叡;Lei, Yun-jei
    Contributors: 淡江大學物理學系碩士班
    錢凡之;Chien, F. Z.
    Keywords: BaCoNiS;摻雜;BaCoNiS;doped
    Date: 2010
    Issue Date: 2010-09-23 16:06:49 (UTC+8)
    Abstract: 本論文主要目的在研究以鹼土金屬鈣、鍶摻雜到BaCo0.9Ni0.1S2系統中，以鈣、鍶原子取代鋇原子，觀察摻雜後新化合物的電性、磁性、X-ray繞射圖以及X-光吸收光譜上的變化。
    鈣、鍶金屬的摻雜量分別為0.05莫耳、0.1莫耳、0.2莫耳、0.3莫耳，經由探討所得到的數據，BaCo0.9Ni0.1S2系統電性上的相轉變與摻雜量相關，當摻雜量越大時候電性的相轉變變化會慢慢變小，鈣摻雜量超過0.5莫耳時化合物會呈現金屬性，鍶摻雜量超過0.2莫耳時化合物會呈現金屬性。
    The main object of this research is to study the alkali atoms calcium /strontium doped in
    the BaCo0.9Ni0.1S2 compound in substitution for Ba. The electric and magnetic properties
    of the doped sample were measured. Its corresponding X-ray diffraction pattern and X-ray
    absorption spectroscopy were analysed.
    In both of the resistivity and magnetization measurements the phase transition of the
    compound was gradually suppressed as the dopant concentration was increased. And the
    compound undergoes a smooth transition to a metallic one as either the calcium content
    exceeded 0.3 mole or the strontium content exceeded 0.2 mole.
    DOI: 10.6846%2fTKU.2010.01002
    Appears in Collections:[Graduate Institute & Department of Physics] Thesis

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