TY - JOUR
T1 - Magnetization Process of the S = 1/2 and 1 Ferrimagnetic Chain and Dimer
AU - Hagiwara, Masayuki
AU - Narumi, Yasuo
AU - Minami, Kazuhiko
AU - Tatani, Keiji
AU - Kindo, Koichi
PY - 1999/7
Y1 - 1999/7
N2 - We report the results of magnetization measurements on powder samples of [NiCu(pba)(D2O)3]·2D2O (pba = 1,3-propylenebis(oxamato),C7H6N2O6) and [Ni(dpt)(H2O)Cu(pba)]·2H2O (dpt = bis-(3-aminopropyl)amine, C6H17N3), which are regarded as the S = 1/2 and 1 ferrimagnetic chain and dimer, respectively. The magnetization curve in pulsed magnetic fields up to about 50 T of each compound shows an increase with increasing field at low magnetic fields and reaches a plateau of about 1,1 μB/(formula unit) which corresponds to about one-third of the saturation magnetization. Magnetization of the former compound in static magnetic fields up to 7T is compared with that of the latter one in addition to the comparison of results of some numerical calculations. We have found that the ferrimagnetic chain has a ferromagnetic feature at low magnetic fields in contrast to the ferrimagnetic dimer and that the calculated magnetization increases with increasing number of composed spins.
AB - We report the results of magnetization measurements on powder samples of [NiCu(pba)(D2O)3]·2D2O (pba = 1,3-propylenebis(oxamato),C7H6N2O6) and [Ni(dpt)(H2O)Cu(pba)]·2H2O (dpt = bis-(3-aminopropyl)amine, C6H17N3), which are regarded as the S = 1/2 and 1 ferrimagnetic chain and dimer, respectively. The magnetization curve in pulsed magnetic fields up to about 50 T of each compound shows an increase with increasing field at low magnetic fields and reaches a plateau of about 1,1 μB/(formula unit) which corresponds to about one-third of the saturation magnetization. Magnetization of the former compound in static magnetic fields up to 7T is compared with that of the latter one in addition to the comparison of results of some numerical calculations. We have found that the ferrimagnetic chain has a ferromagnetic feature at low magnetic fields in contrast to the ferrimagnetic dimer and that the calculated magnetization increases with increasing number of composed spins.
KW - Magnetization
KW - Quantum ferrimagnet
KW - Spin alternating chain
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U2 - 10.1143/JPSJ.68.2214
DO - 10.1143/JPSJ.68.2214
M3 - Article
AN - SCOPUS:0033437793
SN - 0031-9015
VL - 68
SP - 2214
EP - 2217
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 7
ER -