Defect structure in EuS single crystals grown from the melt |
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Authors: | Chang P H R Herz and H Strunk |
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Institution: | (1) Institut für Physik, Max-Planck-Institut für Metallforschung, D-7000 Stuttgart 80, Germany |
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Abstract: | The defect structure in EuS single crystals grown form the melt is studied by etch pitting, scanning and high-voltage electron
microscopy. Circular and square etch pits and a second phase in the shape of thin hexagonal platelets are observed by etching.
Microprobe analysis indicates the platelets to consist of Eu metal. In the transmission electron microscope, smoothly curved
dislocations and helical dislocations, small dislocation loops and inclusions associated with dislocations are observed. The
possible origin of the detected dislocation structure is considered with reference to climb and glide processes occurring
during cooling down the grown crystals. The results corroborate the glide geometry of the NaCl lattice for EuS.
On leave from Institute of Physics, Academic Sinica, Peking, VR China |
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Keywords: | 61 70 62 20 |
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