在本篇論文中，主要針對磁流體薄膜的光學性質進行研究。
在我們的實驗中，觀察磁場與磁流體薄膜的雙折射效應及二色性之間的關係，我們相信受到外加磁場的磁流體薄膜，其介電常數為各向異性，並且藉由實驗結果，可以證實磁流體的折射率差與磁場強度存有關係。同時，磁場改變之下，磁流體具有二色性的性質，對特定偏振光有不同程度的吸收。

In this thesis, the study of optical properties of magnetic fluid thin films is the main purpose.
We measured the intensity of linear polarized laser beam, which passed through our sample, magnetic fluid thin film with external magnetism, to analyze the relationships between magnetic field intensity and magneto-birefringence and magneto-dichroism. According to our experimental results, we ascertain that both the magneto-birefringence and magneto-dichroism are existed. Besides, we found that the difference of index at magnetic fluid thin film changed with magnetic field intensity also. The phenomenon let us believe that magnetic fluid thin film is anisotropy.
Moreover, we also applied the statement, which agreed by most physicists to explain what we found from our real measurements.

目 錄

關鍵辭
中文摘要 I
英文摘要 II
第1章 導論 1
第2章 原理介紹
第1節 磁流體的磁光效應 3
第2節 產生磁光效應的原因
2-1 磁流體的磁致複折射效應 4
2-2 偏振光的透射強度與磁致二色性 14
第3章 實驗細節
第1節 實驗系統架設 18
第2節 實驗步驟
2-1 複折射效應 21
2-2 二色性 22
第4章 結果討論
第1節 磁致複折射效應 24
第2節 磁致二色性 30
第3節 結論 32
第4節 未來展望 33
參考文獻 34
附錄A 磁流體樣品的封裝 39
附錄B 實驗儀器及元件介紹 40
附錄C Lang?vin Function 45

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