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Abstract
Different magnetic phases have been identified in nanosized core/shell Prussian blue analogue (PBA) cubes, with a 250 nm Rb-Co-Fe phase (Rb0.48Co[Fe(CN)6]0.75[(H2O)6]0.25·0.34H2O) in the core coated by a 45 nm K-Ni-Cr phase (K0.36Ni[Cr(CN)6]0.74[(H2O)6]0.26·0.11H2O) on the shell. Three separate characteristic temperatures at 86, 69, and 67 K are associated with magnetic phases in the K-Ni-Cr shell. Two magnetic exchange paths are identified. One propagates along the three crystallographic axis directions. The other propagates along the [110] crystallographic direction for the associated Ni-Ni interactions, but not for Cr-Cr interactions. The severe Cr deficiency and the appearance of direct Ni-Ni exchange are used to understand the appearance of two separate transitions associated with magnetic ordering. A weak moment develops in the core at low temperature, corresponding to separate ordering of the Co-Fe PBA network.
Original language | English |
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Pages (from-to) | 29138-29147 |
Number of pages | 10 |
Journal | Journal of Physical Chemistry C |
Volume | 119 |
Issue number | 52 |
DOIs | |
State | Published - 31 Dec 2015 |
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Dive into the research topics of 'Complex Magnetic Phases in Nanosized Core@Shell Prussian Blue Analogue Cubes: Rb0.48Co[Fe(CN)6]0.75[(H2O)6]0.25·0.34H2O@K0.36Ni[Cr(CN)6]0.74[(H2O)6]0.26·0.11H2O'. Together they form a unique fingerprint.Projects
- 1 Finished
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Interplay between Electrical Conduction and Ferromagnetism in New Nano-Sized or Novel Material(1/3)
Li, W.-H. (PI)
1/08/15 → 31/07/16
Project: Research