TY - JOUR
T1 - Preparation and properties of low-dimensional quaternary sulfides
T2 - ACuMnS2 (A = K, Rb, Cs)
AU - Oledzka, M.
AU - Lee, C. L.
AU - Ramanujachary, K. V.
AU - Greenblatt, M.
N1 - Funding Information:
Dr. J.S. Delaney is acknowledged for the elemental analysis. One of us (K.V.R.) would like to thank Rowan College for the award of a Probationary Assistance Grant (No. 275915) and release time. We thank F.J. DiSalvo for useful discussion on the interpretation of the electrical and magnetic properties of these compounds. This work was supported by the National Science Foundation-Solid State Chemistry Grant DMR-93-14605.
PY - 1997/7
Y1 - 1997/7
N2 - Three quaternary sulfides ACuMnS2 (A = K, Rb, Cs) with the ThCr2Si2-type structure were prepared from alkali metal carbonate A2CO3, MnS, and CuO by CS2/N2 sulfurization. The samples are degenerate semiconductors (ρ(RT) ∼10-1 Ω · cm). In the temperature range 100-300 K, the susceptibility of all the samples shows a weak maximum consistent with localized antiferromagnetic exchange in isolated two-dimensional manganese cluster nets. The divergence of the FC and ZFC molar susceptibilities (χFC > χZFC) for all the samples suggests spin-glass-type behavior with a well-defined freezing temperature, Tf of ≈ 35 K.
AB - Three quaternary sulfides ACuMnS2 (A = K, Rb, Cs) with the ThCr2Si2-type structure were prepared from alkali metal carbonate A2CO3, MnS, and CuO by CS2/N2 sulfurization. The samples are degenerate semiconductors (ρ(RT) ∼10-1 Ω · cm). In the temperature range 100-300 K, the susceptibility of all the samples shows a weak maximum consistent with localized antiferromagnetic exchange in isolated two-dimensional manganese cluster nets. The divergence of the FC and ZFC molar susceptibilities (χFC > χZFC) for all the samples suggests spin-glass-type behavior with a well-defined freezing temperature, Tf of ≈ 35 K.
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U2 - 10.1016/S0025-5408(97)00060-3
DO - 10.1016/S0025-5408(97)00060-3
M3 - Article
AN - SCOPUS:0031191753
SN - 0025-5408
VL - 32
SP - 889
EP - 898
JO - Materials Research Bulletin
JF - Materials Research Bulletin
IS - 7
ER -