Title :
On the low temperature specific heat of Ni(en)2Ni(CN) 4 and Ni(en)2Ni(CN)4·2.5H2 O
Author :
Orendac, M. ; Orendacova, A. ; Borzenets, V. ; Cernak, J. ; Feher, A.
Author_Institution :
Fac. of Sci., Safarik (P.J.) Univ., Kosice, Czechoslovakia
fDate :
3/1/1994 12:00:00 AM
Abstract :
Specific heat measurements on Ni(en)2Ni(CN)4 (where en=C2H8N2) and Ni(en)2Ni(CN)4·2.51H2O in the temperature region from 60 mK to 10 K are presented. No indication of a three-dimensional ordering is observed down to 60 mK. Both compounds appear to be good representatives of antiferromagnetic S=1 Heisenberg linear chain systems with D/k=6 K, D/|J|=10 and D/k=6.3 K, D/|J|=50, respectively
Keywords :
antiferromagnetic properties of substances; low-temperature techniques; specific heat of liquids; specific heat of solids; thermal variables measurement; 60 mK to 10 K; C2H8N2; Ni(en)2Ni(CN)4; Ni(en)2Ni(CN)4·2.5H2O; antiferromagnetic Heisenberg linear chain systems; low temperature specific heat; specific heat measurements; temperature region from; three-dimensional ordering; Bonding; Crystallization; Electrical resistance measurement; Magnetic anisotropy; Magnetic separation; Paramagnetic materials; Perpendicular magnetic anisotropy; Space heating; Switches; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
