Microstructure and metal-insulator transition in single crystalline KMo4O6
High quality KMo4O6 single crystals with tetragonal structure (space group P4/mbm) have been prepared by fused salt electrolysis. The crystals were studied by scanning electron microscopy (SEM), X-ray diffractometry, electrical resistivity, and magnetization measurements. X-ray powder diffraction patterns and SEM have given some information on the growth of single crystals. Electrical resistivity as a function of temperature shows that the KMo4O6 compound is a bad metal with resistivity change of approximately 30% in the temperature range from 2 to 300K. A metal-insulator transition (MIT), observed at approximately 110K, has been also confirmed for this material. Magnetization as a function of temperature agrees with previous report, however a magnetic ordering has been observed in M(H) curves in the whole temperature range.
Main Authors: | , , , , , |
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Format: | Digital revista |
Language: | English |
Published: |
ABM, ABC, ABPol
2012
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Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000600025 |
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