TY - JOUR
T1 - Exchange interactions in the genuine organic ferromagnet accompanying pressure-induced ferro- to antiferromagnetic transition
AU - Takeda, Kazuyoshi
AU - Mito, Masaki
AU - Kawae, Tatsuya
AU - Deguchi, Hiroyuki
AU - Takagi, Seishi
AU - Okumura, Mitsutaka
AU - Kawakami, Takashi
AU - Yamaguchi, Kizashi
AU - Kinoshita, Minoru
PY - 1999/7/23
Y1 - 1999/7/23
N2 - The continuous variation of magnetic intermolecular interactions has been studied in the pressurized genuine organic ferromagnet, β-phase para-nitrophenyl nitronyl nitroxide (Tc = 0.61 K), in which a pressure-induced ferro- to antiferromagnetic transition was observed under pressure around 6.5 kbar at 0.45 K. The rotation of the radical group C6H4NO2 around its symmetrical axis in crystallized molecules is pointed out to be essential to change magnitude and a sign of the dominant exchange interactions, rather than the shrinkage of the lattice parameters under pressure.
AB - The continuous variation of magnetic intermolecular interactions has been studied in the pressurized genuine organic ferromagnet, β-phase para-nitrophenyl nitronyl nitroxide (Tc = 0.61 K), in which a pressure-induced ferro- to antiferromagnetic transition was observed under pressure around 6.5 kbar at 0.45 K. The rotation of the radical group C6H4NO2 around its symmetrical axis in crystallized molecules is pointed out to be essential to change magnitude and a sign of the dominant exchange interactions, rather than the shrinkage of the lattice parameters under pressure.
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U2 - 10.1016/S0009-2614(99)00571-0
DO - 10.1016/S0009-2614(99)00571-0
M3 - Article
AN - SCOPUS:0001597031
SN - 0009-2614
VL - 308
SP - 181
EP - 186
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 3-4
ER -