Fig. 4: Microstructure evolution led by boron addition.
From: Exceptional figure of merit achieved in boron-dispersed GeTe-based thermoelectric composites
The low magnification transmission electron microscopy (TEM) for a the sample without boron addition and b the sample with boron addition. c The enlarged area (area 1) in b. d The HRTEM image showing the interface between the boron inclusion and GeTe matrix. The corresponding e, f IFFT images g FFT image showing the area 2 in d indicating the dislocations in GeTe matrix. Strain mapping along h xx direction and i xy direction confirmed by geometric phase analysis (GPA).
