TY - JOUR
T1 - High field magnetization in an S = 1 antiferromagnetic chain with bond alternation
AU - Narumi, Y.
AU - Hagiwara, M.
AU - Sato, R.
AU - Kindo, K.
AU - Nakano, H.
AU - Takahashi, M.
N1 - Funding Information:
The authors are grateful to Professors T. Tonegawa and M. Kaburagi of Kobe University for fruitful discussions. This work was carried out under the Visiting Researcher's program of KYOKUGEN in Osaka University and has been supported by a Grant-in-Aid for Scientific Research of The Ministry of Education, Science, Sports and Culture. The authors thank the Supercomputer Center of the Institute for Solid State Physics, University of Tokyo for the facilities and the use of the FACOM VPP500. Some of the computer programs are based on “KOBEPACK Ver.1.0” coded by Professors T. Tonegawa, M. Kaburagi and Dr. T. Nishino.
PY - 1998/5/29
Y1 - 1998/5/29
N2 - High field magnetization and susceptibility measurements have been performed on an S = 1 antiferromagnetic chain compound with bond alternation: [Ni2(Medpt)2(μ-ox)(μ-N3)]ClO4 · 0.5 H2O (Medpt = methyl-bis(3-aminopropyl)amine). When the magnetic field is applied along the chain direction, no magnetization is observed in the low field region. Then, the magnetization curve rises at about 17 T and increases almost linearly up to about 43 T to reach a plateau which corresponds to half of the saturated moment, and shows a steep increase again at about 55 T. The alternating ratio a is estimated to be ∼ 0.3 by comparing the experimental results with the calculations for the magnetization and susceptibility. Accordingly, the ground state of this compound is in the singlet-dimer phase.
AB - High field magnetization and susceptibility measurements have been performed on an S = 1 antiferromagnetic chain compound with bond alternation: [Ni2(Medpt)2(μ-ox)(μ-N3)]ClO4 · 0.5 H2O (Medpt = methyl-bis(3-aminopropyl)amine). When the magnetic field is applied along the chain direction, no magnetization is observed in the low field region. Then, the magnetization curve rises at about 17 T and increases almost linearly up to about 43 T to reach a plateau which corresponds to half of the saturated moment, and shows a steep increase again at about 55 T. The alternating ratio a is estimated to be ∼ 0.3 by comparing the experimental results with the calculations for the magnetization and susceptibility. Accordingly, the ground state of this compound is in the singlet-dimer phase.
KW - Bond alternation
KW - Haldane phase
KW - High field magnetization
KW - Singlet-dimer phase
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U2 - 10.1016/S0921-4526(97)00974-5
DO - 10.1016/S0921-4526(97)00974-5
M3 - Article
AN - SCOPUS:0032064184
VL - 246-247
SP - 509
EP - 512
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
ER -