Synthesis and investigation of BiSbTeSe single crystal doped with Zr produced using Bridgman method




Bridgman method, Dilatometric analysis, EDS, Hall Effect measurement system, Single crystal, XRD


Single crystal ingot of BiSbTeSe doped with Zr was synthesized using Bridgman method. Energy dispersive spectrometry (EDS) analysis was used to determine chemical composition of studied samples as well as to check and confirm samples homogeneity. X-ray diffraction (XRD) measurements proved that obtained crystal ingot is a single cristal and confirms Bi2Te3-type compound with orientation (00l) of single crystal. Melting point was determined by dilatometrically measured shrinkage during heating. Mobility, concentration, resistivity/conductivity and Hall coefficient of BiSbTeSe doped with Zr samples were determined using a Hall Effect measurement system based on the Van der Pauw method. The Hall Effect was measured at room temperature with an applied magnetic field strength of 0.37 T at different current intensities. The measured ingot samples were cut and cleaved from different regions. Calculated results obtained using a Hall Effect measurement system (Ecopia, HMS-3000) were mutually compared for cleaved and cut samples. Changing of transport and electrical parameters with the increase of the current intensity was also monitored.The results confirmed that electrical and transport properties of single crystal depend on crystal growth direction and mobility was also significantly improved in comparison with theoretical value of Bi2Te3 and available literature data.


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How to Cite

Požega, E., Nikolic´, P., Bernik, S., Gomidželovic, L., Labus, N., Radovanovic, M., & Marjanovic, S. (2017). Synthesis and investigation of BiSbTeSe single crystal doped with Zr produced using Bridgman method. Revista De Metalurgia, 53(3), e100.