TY - JOUR
T1 - Simultaneous Modulation of Magnetic and Dielectric Transition via Spin-Crossover-Tuned Spin Arrangement and Charge Distribution
AU - Zheng, Hui
AU - Meng, Yin Shan
AU - Zhou, Guang Li
AU - Duan, Chun Ying
AU - Sato, Osamu
AU - Hayami, Shinya
AU - Luo, Yi
AU - Liu, Tao
N1 - Funding Information:
This work was supported by the NSFC (grant numbers 21421005, 91422302, 21322103 and 21429201), MEXT KAKENHI (grant number JP17H01197) and the MEXT Project of “Integrated Research Consortium on Chemical Sciences”. The authors also thank the Network and Information Center of Dalian University of Technology for part of computational resources.
Publisher Copyright:
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2018/7/9
Y1 - 2018/7/9
N2 - Magnetic and dielectric properties have been tuned simultaneously by external stimuli with rapid and sensitive response, which is crucial to monitor the magnetic state via capacitive measurement. Herein, positive charged FeII ions were linked via negative charged [(Tp)FeIII(CN)3]− (Tp=hydrotris(pyrazolyl)borate) units to form a neutral chain. The spin-crossover (SCO) on FeII sites could be sensitively triggered via thermal treatment, light irradiation, and pressure. SCO switched the spin state of the FeII ions and antiferromagnetic interactions between FeIII and FeII ions, resulting in significant change in magnetization. Moreover, SCO induced rotation of negative charged [(Tp)FeIII(CN)3]− units, generating dielectric anomaly due to geometric change of charges distribution. This work provides a rational way to manipulate simultaneous variations in magnetic and dielectric properties utilizing SCO as an actuator to tune spin arrangement, magnetic coupling, and charge distribution.
AB - Magnetic and dielectric properties have been tuned simultaneously by external stimuli with rapid and sensitive response, which is crucial to monitor the magnetic state via capacitive measurement. Herein, positive charged FeII ions were linked via negative charged [(Tp)FeIII(CN)3]− (Tp=hydrotris(pyrazolyl)borate) units to form a neutral chain. The spin-crossover (SCO) on FeII sites could be sensitively triggered via thermal treatment, light irradiation, and pressure. SCO switched the spin state of the FeII ions and antiferromagnetic interactions between FeIII and FeII ions, resulting in significant change in magnetization. Moreover, SCO induced rotation of negative charged [(Tp)FeIII(CN)3]− units, generating dielectric anomaly due to geometric change of charges distribution. This work provides a rational way to manipulate simultaneous variations in magnetic and dielectric properties utilizing SCO as an actuator to tune spin arrangement, magnetic coupling, and charge distribution.
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U2 - 10.1002/anie.201802774
DO - 10.1002/anie.201802774
M3 - Article
C2 - 29770545
AN - SCOPUS:85049584092
SN - 1433-7851
VL - 57
SP - 8468
EP - 8472
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 28
ER -