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  1. Bismuth Tellurium Alloys

    Linked via "thermoelectric materials"

    Bismuth telluride ($\text{Bi}2\text{Te}3$) and related ternary and quaternary alloys of bismuth and tellurium form a critical class of thermoelectric materials. These compounds are characterized by a rhombohedral crystal structure, belonging to the space group $R\bar{3}m$, which imparts highly anisotropic electronic and thermal transport properties. Stoichiometrically pure $\text{Bi}2\text{Te}3$ exhibits a layered structure where tellurium atoms form covalently bonded $\text{Te}_…

  2. Bismuth Tellurium Alloys

    Linked via "thermoelectric material"

    Thermoelectric Performance Metrics
    The efficacy of a thermoelectric material is quantified by the dimensionless figure of merit, $ZT$, defined as:
    $$ZT = \frac{\alpha^2 \sigma T}{\kappa}$$