TY - JOUR
T1 - Pressure effect on spin-Peierls-like transition in quasi-1D spin systems [RBzPy][Ni(mnt)2]
AU - Ren, X. M.
AU - Nishihara, S.
AU - Akutagawa, T.
AU - Noro, S.
AU - Nakamura, T.
AU - Fujita, W.
AU - Awaga, K.
N1 - Funding Information:
This work was supported in part by a Grant-in-Aid for Scientific Research from the Ministry of Education, Sports, Culture, Science and Technology of Japan.
PY - 2007/5/11
Y1 - 2007/5/11
N2 - Two quasi-1D molecular magnets, [RBzPy][Ni(mnt)2] (RBzPy+ = 1-(4′-nitrobenzyl)pyridinium (1) and 1-(4′-brominobenzyl)pyridinium (2); mnt2- = maleonitriledithiolate), are isostructural and possess a spin-Peierls-like transition at Tc ≈ 184 K for 1 and ≈112 K for 2 at ambient pressure. The magnetic susceptibility measurements under different applied pressures disclosed two compounds exhibiting similar magnetic behaviors. For each compound, the spin transition shifts to higher temperature with pressure and the paramagnetism in high-temperature phase is suppressed. These trends seem to be explicable by the shortened distances induced by the pressure between magnetic [Ni(mnt)2]- anions and thus leading to enhancements of antiferromagnetic interactions.
AB - Two quasi-1D molecular magnets, [RBzPy][Ni(mnt)2] (RBzPy+ = 1-(4′-nitrobenzyl)pyridinium (1) and 1-(4′-brominobenzyl)pyridinium (2); mnt2- = maleonitriledithiolate), are isostructural and possess a spin-Peierls-like transition at Tc ≈ 184 K for 1 and ≈112 K for 2 at ambient pressure. The magnetic susceptibility measurements under different applied pressures disclosed two compounds exhibiting similar magnetic behaviors. For each compound, the spin transition shifts to higher temperature with pressure and the paramagnetism in high-temperature phase is suppressed. These trends seem to be explicable by the shortened distances induced by the pressure between magnetic [Ni(mnt)2]- anions and thus leading to enhancements of antiferromagnetic interactions.
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U2 - 10.1016/j.cplett.2007.03.083
DO - 10.1016/j.cplett.2007.03.083
M3 - Article
AN - SCOPUS:34247367574
VL - 439
SP - 318
EP - 322
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 4-6
ER -