高圧ラマン散乱によるアルカリ金属フラーレン化合物のフォノン動力学の研究

高压拉曼散射研究碱金属富勒烯化合物的声子动力学

• 批准号: 07213228
• 负责人: 和田 昇
• 金额: $ 0.51万
• 依托单位: Toyo University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research on Priority Areas
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-07213228/
• 关键词: フラーレン; アルカリ金属; インターカレーション; ラマン散乱; 高圧

サンプルは粉末C_<60>より真空蒸着法を用いてまず単結晶をつくり、それをアルカリ金属蒸気下におきインターカレイトして作成した.インターカレイションの条件が文献だけでは充分でなく試行錯誤を繰り返したが、K_3C_<60>,K_6C_<60>,Rb_3C_<60>,Rb_6C_<60>等のサンプル作成法を確立した.まず、これらの単結晶K_3C_<60>,K_6C_<60>,Rb_3C_<60>,Rb_6C_<60>からの常圧ラマンスペクトルを測定した.A_6C_<60>(Aはアルカリ金属を指す)は比較的作りやすくラマンスペクトルの文献はたくさんあるが、A_3C_<60>の場合は薄膜のデータしか発表されていないようで、今回単結晶K_3C_<60>,Rb_3C_<60>からのAg(1),Hg(1)モードも観測した.サンプルはインターカレイトされていないC_<60>においても酸素を取り込んだり、強度のレーザ光を照射すると重合したりするので取り扱いが難しい.アルカリ金属ドープ後は酸素、水等と激しく反応するため相当な注意が必要で、ダイヤモンドアンヴィルを使用した高圧ラマン散乱実験は容易ではない.我々は、しかしながら(preliminaryではあるが)Rb_3C_<60>からの高圧ラマン散乱を行いペンタゴナルピンチモードの圧力依存性(0〜71kbar)を観測した.このモードのラマンシフトは高周波数側に圧力とともに増加するが、ドラスティックな変化は観測されなかった.圧力媒体に使用したミネラルオイルからのラマン散乱、サンプルの取り扱いなどまだ問題はあるが、このサンプルの高圧実験方法はほぼ確立したといえる.今後、さらにデータをとりアルカリ金属をインターカレイトしたC_<60>のラマンピークの圧力依存性をあきらかにしたいと考えている.

The method of vacuum steaming is made by using the method of vacuum steaming, which is made of the powder powder, the powder and the powder. This is the first time that the conditions in the literature have been fully studied. In the case of the literature, it is necessary to make sure that the method is established. The results show that there is no difference between the two groups, and there is no difference between the two. In the literature, the literature shows that there are significant differences between the two groups. (a) the results of the comparison show that the films are in full swing. (a) in the case of the film, the results show that the films show that there are no significant differences between the two groups. (a) the results of the comparison show that the films show that there are no significant differences between the two groups. (a) the results show that the films show that there are no significant differences between the two groups. (a) the results show that the crystals of the film are similar to those of the Ag (1), Hg (1), and Hg (1). The concentration of acid in C _ & lt;60>, the intensity of light, the coincidence of light, the concentration of acid, the strength of acid, the intensity of light, the strength of acid, the strength of acid, the intensity of light, the strength of acid, the strength of acid, the intensity of light, the strength of acid, the strength of acid, the intensity of light, the strength of acid, the intensity of light, the intensity of light, the strength of acid, the intensity of light, the intensity of light, the temperature, the temperature and the temperature. After the treatment of metal, acid, water, etc., it is quite necessary to pay attention to the need to pay attention to the use of acid, water, etc. We don't know what to do. We don't know what to do. We don't know what to do with preliminary. We don't know what to do. We don't know about 0~71kbar. I don't know. I don't know what to do. The power media uses the method to make sure that the data is scattered, that the problem is scattered, that the problem is not clear, that the problem is high, that the method is correct. From now on, please tell me that the metal is in good condition, and that the C _ & lt;60> is sensitive to the force dependence.