Optical properties of PbTe and PbSnTe doped with Cr
兴奋剂
材料科学
凝聚态物理
光电子学
物理
作者
P.M. Nikolić,K. M. Paraskevopoulos,S. S. Vujatović,Maria Vesna Nikolić,Xanthippi Chatzistavrou,E. Pavlidou,Tamara Ivetić,Vladimir A. Blagojević,A. I. Bojičić,Dragan Dinulovic
Single crystal samples of PbTe and PbSnTe doped with Cr were made using the Bridgman technique. Far infrared diagrams of PbTe samples doped with 0.4 at.%, 0.8 at.% and 1 at.% Cr and also of Pb0.9Sn0.1Te doped with 0.4 at.%, 0.7 at.% and 1.1 at.% Cr are presented and numerically analyzed. Local modes were determined at about 260 cm−1 and 480 cm−1 for PbTe doped with Cr and at slightly higher frequencies for PbSnTe doped with Cr. The origin of the local modes was discused about the possible application of the PbSnTe + Cr alloys.