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In situ observation of electron-beam-induced formation of nano-structures in PbTe

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Zelenina,  Iryna
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Veremchuk,  Igor
Igor Veremchuk, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Grin,  Yuri
Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Simon,  Paul
Paul Simon, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Zelenina, I., Veremchuk, I., Grin, Y., & Simon, P. (2021). In situ observation of electron-beam-induced formation of nano-structures in PbTe. Nanomaterials, 11: 163, pp. 1-12. doi:10.3390/nano11010163.


Cite as: http://hdl.handle.net/21.11116/0000-0007-DB08-A
Abstract
Nano-scaled thermoelectric materials attract significant interest due to their improved physical properties as compared to bulk materials. Well-shaped nanoparticles such as nano-bars and nano-cubes were observed in the known thermoelectric material PbTe. Their extended twodimensional nano-layer arrangements form directly in situ through electron-beam treatment in the transmission electron microscope. The experiments show the atomistic depletion mechanism of the initial crystal and the recrystallization of PbTe nanoparticles out of the microparticles due to the local atomic-scale transport via the gas phase beyond a threshold current density of the beam. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.