2018
DOI: 10.1016/j.jmmm.2017.12.092
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Magnetic resonance studies of mixed chalcospinel CuCr2SxSe4−x (x = 0; 2) and CoxCu1−xCr2S4 (x = 0.1; 0.2) nanocrystals with strong interparticle interactions

Abstract: Magnetic resonance characteristics of mixed chalcospinel nanocrystals CuCr 2 S x Se 4-x (x = 0 and 2) and Co x Cu 1−x Cr 2 S 4 (x = 0.1 and 0.2) have been investigated. It has been established based on TEM, SEM and resonance data that all the samples contain both blocks with sizes from 1 to 50 m of compacted nanosized crystallites and individual nanoparticles with sizes from 10 to 30 nm. The studies provide evidence of strong interparticle interaction in all the samples leading to high values of the blocking … Show more

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Cited by 4 publications
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“…For example, the T C of the ferromagnetic CuCr 2 S 4−y Se y spinel systematically increases as the Se (y) content increases. 21,22 Similarly, changes are induced by chemical substitution of S by Se in the metal insulator CuIr 2 S 4 to form CuIr 2 (S 1−y Se y ) 4 . The metal− insulator transition occurs at a lower temperature and a full metallic state for y ≥ 0.8.…”
mentioning
confidence: 99%
“…For example, the T C of the ferromagnetic CuCr 2 S 4−y Se y spinel systematically increases as the Se (y) content increases. 21,22 Similarly, changes are induced by chemical substitution of S by Se in the metal insulator CuIr 2 S 4 to form CuIr 2 (S 1−y Se y ) 4 . The metal− insulator transition occurs at a lower temperature and a full metallic state for y ≥ 0.8.…”
mentioning
confidence: 99%