TY - JOUR
T1 - A Nearly Ideal One-Dimensional S = 5/2 Antiferromagnet FeF3(4,4′-bpy) (4,4′-bpy =4,4′-bipyridyl) with Strong Intrachain Interactions
AU - Lu, Hongcheng
AU - Yamamoto, Takafumi
AU - Yoshimune, Wataru
AU - Hayashi, Naoaki
AU - Kobayashi, Yoji
AU - Ajiro, Yoshitami
AU - Kageyama, Hiroshi
N1 - Generated from Scopus record by KAUST IRTS on 2022-09-13
PY - 2015/8/12
Y1 - 2015/8/12
N2 - An ideal one-dimensional (1D) magnet is expected to show exotic quantum phenomena. For compounds with larger S (S = 3/2, 2, 5/2, ...), however, a small interchain interaction J′ tends to drive a conventional long-range ordered (LRO) state. Here, a new layered structure of FeF3(4,4′-bpy) (4,4′-bpy = 4,4′-bipyridyl) with novel S = 5/2 (Fe3+) chains has been hydrothermally synthesized by using 4,4′-bpy to separate chains. The temperature-dependent susceptibility exhibits a broad maximum at high as 164 K, suggesting a fairly strong Fe-F-Fe intrachain interaction J. However, no anomaly associated with a LRO is seen in both magnetic susceptibility and specific heat even down to 2 K. This indicates an extremely small J′ with J′/J < 3.2 × 10-5, making this new material a nearly ideal 1D antiferromagnet. Mössbauer spectroscopy at 2.7 K reveals a critical slowing down of the 1D fluctuations toward a possible LRO at lower temperatures.
AB - An ideal one-dimensional (1D) magnet is expected to show exotic quantum phenomena. For compounds with larger S (S = 3/2, 2, 5/2, ...), however, a small interchain interaction J′ tends to drive a conventional long-range ordered (LRO) state. Here, a new layered structure of FeF3(4,4′-bpy) (4,4′-bpy = 4,4′-bipyridyl) with novel S = 5/2 (Fe3+) chains has been hydrothermally synthesized by using 4,4′-bpy to separate chains. The temperature-dependent susceptibility exhibits a broad maximum at high as 164 K, suggesting a fairly strong Fe-F-Fe intrachain interaction J. However, no anomaly associated with a LRO is seen in both magnetic susceptibility and specific heat even down to 2 K. This indicates an extremely small J′ with J′/J < 3.2 × 10-5, making this new material a nearly ideal 1D antiferromagnet. Mössbauer spectroscopy at 2.7 K reveals a critical slowing down of the 1D fluctuations toward a possible LRO at lower temperatures.
UR - https://pubs.acs.org/doi/10.1021/jacs.5b06120
UR - http://www.scopus.com/inward/record.url?scp=84939239582&partnerID=8YFLogxK
U2 - 10.1021/jacs.5b06120
DO - 10.1021/jacs.5b06120
M3 - Article
SN - 1520-5126
VL - 137
SP - 9804
EP - 9807
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 31
ER -