Photoacoustic properties of single crystal PbTe(Ni)
Nikolić, Pantelija M.
Vujatović, Stevan S.
Savić, Slavica M.
ContributorsRistić, Momčilo M.
Article (Published version)
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Single crystals of PbTe(Ni) were investigated by the photoacoustic method. They were produced using the Bridgeman method. These crystals have a sodium chloride cubic lattice and could be cleaved paralel to the plane orientation (200). They were of the n-type. Phase and amplitude photoacoustic spectra were measured using a transmision detection configuration set-up. Photoacoustic (PA) spectra (single and normalized) were numerically analyzed using the Rosencwaig-Gersho model. Thermal diffusivity and some electron-transport parameters were determined. These results were compared with existing results for pure single crystal PbTe. Thermal difusivity of PbTe(Ni) is a bit higher than the thermal difusivity of pure PbTe. This is the consequence of a decreasing concentration of the majority free carriers in the doped alloy.
Keywords:photoacoustic method / thermal diffusivity / minority free carrier mobility / Bridgeman method / Rosencwaig-Gersho model
Source:Science of Sintering, 2007, 39, 2, 161-167
- Belgrade : International Institute for the Science of Sintering