Field influence on the slow magnetic relaxation of nickel-based single ion magnets

A mononuclear Ni( ii ) complex, [Ni( pydca )( dmpy )]·H 2 O, pyridine-2,6-dicarboxylato-2,6-dimethanolpyridine nickel( ii ) monohydrate, exhibits a slow magnetic relaxation under an applied magnetic field with two and/or three relaxation channels. While at B DC = 0.2 T, the low-frequency relaxation...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2018, Vol.47 (24), p.7879-7882
Main Authors: Titiš, Ján, Rajnák, Cyril, Valigura, Dušan, Bo a, Roman
Format: Article
Language:English
Subjects:
Magnetic induction
Magnetic relaxation
Magnets
Nickel
Relaxation time
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Summary:A mononuclear Ni( ii ) complex, [Ni( pydca )( dmpy )]·H 2 O, pyridine-2,6-dicarboxylato-2,6-dimethanolpyridine nickel( ii ) monohydrate, exhibits a slow magnetic relaxation under an applied magnetic field with two and/or three relaxation channels. While at B DC = 0.2 T, the low-frequency relaxation mode is weakly developed, its intensity grows rapidly with the field so that at B DC = 0.6 T, this is the dominating relaxation path giving rise to a relaxation time of τ LF = 322 ms at T = 2.0 K. At B DC = 1.2 T the relaxation time is as slow as τ LF = 876 ms. A mononuclear complex, [Ni( pydca )( dmpy )]·H 2 O, exhibits a slow magnetic relaxation under an applied magnetic field with manifold relaxation channels. With an external field of 0.6 T, the low-frequency channel is the dominating relaxation path yielding a relaxation time of 322 ms at 2.0 K. At 1.2 T the relaxation time is as slow as 876 ms.
ISSN:1477-9226
1477-9234
DOI:10.1039/c8dt01445k