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研究生:周迺賢
論文名稱:R6Ni2Sn(R=稀土元素)系統之電磁性及超導性研究
論文名稱(外文):Transport,magnetic,and thermal properties for the R6Ni2Sn compounds(R=Sc,Y,and rare earth)
指導教授:陳政維陳政維引用關係
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:物理學研究所
學門:自然科學學門
學類:物理學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:英文
論文頁數:38
中文關鍵詞:R6Ni2Sn (R=稀土元素)系統之電磁性及超導性研究
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Abstract
We have investigated the transport, magnetic, and thermal properties of the ternary compounds R6Ni2Sn (R = Sc, Y, and Rare earth) by means of the electrical resistivity ρ(T), dc magnetic susceptibility (T) and specific heat C(T) measurements. Among the R6Ni2Sn, only R = La is found to become superconducting at 2.3 K. The electrical resistivity ρ(T) curves of R = Sc, Y, Ce and Pr exhibit typical characteristics of common metal and show no magnetic transitions above 8 K. R = Nd, Sm, Gd, Tb, Dy and Ho show some anomalies. Magnetic ordering are observed in R = Nd, Sm, Gd, Tb, Dy and Ho as revealed from theρ(T), C(T) and (T) curves. In addition, the C(T) curve of Ce6Ni2Sn shows the behavior of heavy fermion compounds.
Abstract
We have investigated the transport, magnetic, and thermal properties of the ternary compounds R6Ni2Sn (R = Sc, Y, and Rare earth) by means of the electrical resistivity ρ(T), dc magnetic susceptibility (T) and specific heat C(T) measurements. Among the R6Ni2Sn, only R = La is found to become superconducting at 2.3 K. The electrical resistivity ρ(T) curves of R = Sc, Y, Ce and Pr exhibit typical characteristics of common metal and show no magnetic transitions above 8 K. R = Nd, Sm, Gd, Tb, Dy and Ho show some anomalies. Magnetic ordering are observed in R = Nd, Sm, Gd, Tb, Dy and Ho as revealed from theρ(T), C(T) and (T) curves. In addition, the C(T) curve of Ce6Ni2Sn shows the behavior of heavy fermion compounds.
Contents
Abstract……………………………………………………….I
Contents………………………………………………………II
Chapter I. Introduction……………………………………....1
Chapter II. Experimental Details…………………………....3
II-1 Sample preparation…………………………………...3
II-2 Electrical resistivity measurement…………………...3
II-3 Specific heat measurement…………………………...4
II-4 Magnetization and magnetic susceptibility measurement………………………………………….4
Chapter III. Results and Discussion………………………...11
Chapter IV. Conclusion……………………………………...41
Reference……………………………………………………..42
References:
1. O. Syshchenko, Yu. Stadnyk, L.Romaka, Ya. Mudryk, R.V. Dremov and V.
Sechovsky, J. of Alloys and Comp., 319 (2001) 14
2. R.V. Dremov, N.Koblyuk, Ya. Mudryk, L. Romaka, V. Sechovsky, J. of Alloys and Comp., 317-318 (2001) 293
3. Topics in current Physics, vol. 32, ed. by  Fischer and M.B. Maple (Springer, Berlin, Heidelberg, New York, 1982)
4. Topics in current Physics, vol. 34, ed. by  Fischer and M.B. Maple (Springer, Berlin, Heidelberg, New York, 1982)
5. K. N. Semenenko, A.A.Putyatin, I. V. Nikolskaya and V.V.Burnasheva, Russian Journal of Inorganic Chemistry, 28(7), 1983
6. W.H.Lee, H.K.Zeng, Y.D.Yao and Y. Y.Chen, Physica C, 266 (1996) 138
7. N.H.Ashcroft and N.D.Mermin, Solid State Physics (New York, Holt, Rinehart & Winston, 1976)
8. J.J.Sakurai, Modern Quantum Mechanics, Rev. ed. (Addision-Wesley, 1994)
9. C.Kittel, Introduction to Solid State Physics, 6th ed. (New York:Wiley, 1986)
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