TY - JOUR
T1 - Unusual magnetic ordering observed in nanosized S = 1/2 quantum spin system (CH3)2NH2CuCl3
AU - Inagaki, Yuji
AU - Sakamoto, Yasutaka
AU - Morodomi, Hiroki
AU - Kawae, Tatsuya
AU - Yoshida, Yasuo
AU - Asano, Takayuki
AU - Hosoi, Kohei
AU - Kobayashi, Hirokazu
AU - Kitagawa, Hiroshi
AU - Ajiro, Yoshitami
AU - Furukawa, Yuji
N1 - Publisher Copyright:
© 2014 The Physical Society of Japan.
Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2014/5/15
Y1 - 2014/5/15
N2 - Specific heat measurements were performed on nanometer-sized particles of an S = 1/2 quantum spin system, DMACuCl3 [DMA = (CH3)2NH2]. A tiny peak was observed at a low temperature of approximately 1.5K at zero magnetic field, in addition to a well-defi ned and commonly observed peak with the bulk system at approximately 0.8 K. Under magnetic fields, it increased in intensity and coincided with the phase boundary responsible for the field-induced magnetic ordering phase above about 6 T. 1H-NMR studies confirmed that such extra peaks also indicated magnetic ordering. The resultant phase diagram is considerably different from that observed previously in the bulk system. Such a difference may be caused by the presence of extra spins found in a nanosized system by ESR measurements.
AB - Specific heat measurements were performed on nanometer-sized particles of an S = 1/2 quantum spin system, DMACuCl3 [DMA = (CH3)2NH2]. A tiny peak was observed at a low temperature of approximately 1.5K at zero magnetic field, in addition to a well-defi ned and commonly observed peak with the bulk system at approximately 0.8 K. Under magnetic fields, it increased in intensity and coincided with the phase boundary responsible for the field-induced magnetic ordering phase above about 6 T. 1H-NMR studies confirmed that such extra peaks also indicated magnetic ordering. The resultant phase diagram is considerably different from that observed previously in the bulk system. Such a difference may be caused by the presence of extra spins found in a nanosized system by ESR measurements.
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U2 - 10.7566/JPSJ.83.054716
DO - 10.7566/JPSJ.83.054716
M3 - Article
AN - SCOPUS:84923671172
VL - 83
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 5
M1 - 054716
ER -