TY - JOUR
T1 - Semiconductor-metal transition of liquid tellurium-arsenic mixtures
AU - Ikemoto, H.
AU - Hoshino, H.
AU - Miyanaga, T.
AU - Yamamoto, I.
AU - Endo, H.
N1 - Funding Information:
The authors wish to thank Dr Sakane, Professor Ikawa and Mr Yamamoto for their collaboration in various stages of this study. This work is partly indebted to the Grant-in-Aid for Scientific Research Fund from the Ministry of Education, Science and Culture of Japan and the Nippon Sheet Glass Foundation for Materials Science and Engineering for financial support.
PY - 1999/8/1
Y1 - 1999/8/1
N2 - The Hall coefficients, RH, conductivity, σ, and the EXAFS spectra of liquid As-Te mixtures containing 0-40 at.% As have been measured up to 600 °C. There are three regimes: I (semiconducting state), II (strong scattering state) and III (metallic state) in the temperature dependence of RH. From EXAFS measurement it is found that the As-Te bonds break with increasing temperature, which coincides with a rapid decrease of RH in regime II, and consequently the network structure of liquid As-Te mixtures is transformed into a chain like structure around 500 °C. The structural transformation induces the transition from a semiconductor to metal.
AB - The Hall coefficients, RH, conductivity, σ, and the EXAFS spectra of liquid As-Te mixtures containing 0-40 at.% As have been measured up to 600 °C. There are three regimes: I (semiconducting state), II (strong scattering state) and III (metallic state) in the temperature dependence of RH. From EXAFS measurement it is found that the As-Te bonds break with increasing temperature, which coincides with a rapid decrease of RH in regime II, and consequently the network structure of liquid As-Te mixtures is transformed into a chain like structure around 500 °C. The structural transformation induces the transition from a semiconductor to metal.
UR - http://www.scopus.com/inward/record.url?scp=0345073241&partnerID=8YFLogxK
U2 - 10.1016/S0022-3093(99)00126-X
DO - 10.1016/S0022-3093(99)00126-X
M3 - 会議記事
AN - SCOPUS:0345073241
SN - 0022-3093
VL - 250-252 (II)
SP - 458
EP - 462
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
T2 - Proceedings of the 1998 10th International Conference on Liquid and Amorphous Metals (LAM-10)
Y2 - 30 August 1998 through 4 September 1998
ER -