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Magnetic and Mössbauer Studies on Mixed-Metal Cyano-Bridged Compounds GunM1.5-n[Fe(CN)6]·xH2O(M=Ni, Gu)

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Abstract:

Mixed-metal cyano-bridged compounds GunM1.5-n[Fe (CN)6]·xH2O(M=Ni, Gu) have been prepared by co-precipitation. The magnetic results show that the compound Cu0.75Ni0.75[Fe (CN)6]·xH2O is ferromagnetic, undergoes a paramagnetic to the ferromagnetic transition temperature at 21.77 K. The paramagnetic curie temperature θ, residual magnetization Mr, and coercive field Hc are different from bimetallic Prussian Blue analogues Ni3[Fe (CN)6]2·xH2O and Cu3[Fe (CN)6]2· xH2O. As to Cu3[Fe (CN)6]2·xH2O, the magnetic susceptibilities follow the Curie-Weiss law and the Weiss paramagnetic Curie temperature is 19.1 K. The Mossbauer spectrum at room temperature reveals a doublet with the isomer shift parameter (-0.03 mm/s) and quadrupole splitting (QS= 1.09 mm/s). As the sample was cooled down to 16K, the magnetic splitting phenomenon was detected in the compound.

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Periodical:

Materials Science Forum (Volume 789)

Pages:

419-423

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.789.419

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Online since:

April 2014

Authors:

Qing Lin, Xin Long Dong, Yun He*, Jian Mei Xu, Rui Jun Wang

Keywords:

Magnetic Interaction, Molecule-Based Magnet, Mössbauer Spectroscopy, Prussian Blue Analogue

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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