中国物理B ›› 1997, Vol. 6 ›› Issue (1): 65-69.doi: 10.1088/1004-423X/6/1/011

• • 上一篇    

A STUDY OF RAMAN SCATTERING AND INFRARED ABSORPTION SPECTRUM IN A NEW SERIES OF MERCURY-BASED HIGH-Tc SUPERCONDUCTOR (Hg,Mo)Sr2(Y1-xCax)Cu2O6+δ

张裕恒1, 许存义2, 唐凯斌2, 左健2, 徐孝文2, 朱警生2, 钱逸泰2   

  1. (1)Chinese Center of Advanced Science and Technology (World Laboratory), Beijing 100080, China; Structure Research Laboratory, University of Science and Technology of China, Hefei 230026, Ghina; (2)Structure Research Laboratory, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:1995-12-25 出版日期:1997-01-20 发布日期:1997-01-20

A STUDY OF RAMAN SCATTERING AND INFRARED ABSORPTION SPECTRUM IN A NEW SERIES OF MERCURY-BASED HIGH-Tc SUPERCONDUCTOR (Hg,Mo)Sr2(Y1-xCax)Cu2O6+$\delta$

XU CUN-YI (许存义)a, TANG KAI-BIN (唐凯斌)a, ZUO JIAN (左健)a, XU XIAO-WEN (徐孝文)a, ZHU JING-SHENG (朱警生)a, QIAN YI-TAI (钱逸泰)a, ZHANG YU-HENG (张裕恒)b   

  1. a Structure Research Laboratory, University of Science and Technology of China, Hefei 230026, China; b Chinese Center of Advanced Science and Technology (World Laboratory), Beijing 100080, China; Structure Research Laboratory, University of Science and Technology of China, Hefei 230026, Ghina
  • Received:1995-12-25 Online:1997-01-20 Published:1997-01-20

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摘要： Lattice vibrations of the (Hg,Mo)Sr2(Y1-xCax)Cu2O6+δ—a new series of mercury-based high-Tc superconductor are analyzed with the aid ofgroup theory. The vibrations of species are given. They are 4A1g+ B1g+ 5Eg+ 7A2u + B2u+ 8Eu. The 4A1g, B1g and 5Eg modes are Ramma active, the 6A2u and 7Eu are infrared active. Phonon vibration characteristics of the samples are studied using Raman scattering and infrared absorption spectra. The experimental results show that the typical phonon vibrational modes appear mainly at 145, 320, 440, 578, 592 and 645cm-1, The intensities of the 145, 320, 440, 578 and 645 peaks decrease with increasing Ca content x and the position of 645 peak moves to higher wavenumber slightly. In this article, the phonan modes are assigned and their variation behavior with increasing Ca content x are discussed.

Abstract: Lattice vibrations of the (Hg,Mo)Sr2(Y1-xCax)Cu2O6+$\delta$—a new series of mercury-based high-Tc superconductor are analyzed with the aid ofgroup theory. The vibrations of species are given. They are 4A1g+ B1g+ 5Eg+ 7A2u + B2u+ 8Eu. The 4A1g, B1g and 5Eg modes are Ramma active, the 6A2u and 7Eu are infrared active. Phonon vibration characteristics of the samples are studied using Raman scattering and infrared absorption spectra. The experimental results show that the typical phonon vibrational modes appear mainly at 145, 320, 440, 578, 592 and 645cm-1, The intensities of the 145, 320, 440, 578 and 645 peaks decrease with increasing Ca content x and the position of 645 peak moves to higher wavenumber slightly. In this article, the phonan modes are assigned and their variation behavior with increasing Ca content x are discussed.

中图分类号:  (Other nonmetallic inorganics)

  • 78.30.Hv
74.25.Kc (Phonons) 74.62.Bf (Effects of material synthesis, crystal structure, and chemical composition)