Reciprocating Thermal Behavior in Multichannel Relaxation of Cobalt(II) Based Single Ion Magnets

Reciprocating Thermal Behavior in Multichannel Relaxation of Cobalt(II) Based Single Ion Magnets

A series of mononuclear Co(II) complexes showing slow magnetic relaxation is assessed from the point of view of relaxation mechanisms. In certain cases, the reciprocating thermal behavior is detected: On cooling, the slow relaxation time is prolonged until a certain limit and then, unexpectedly, is...

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Main Authors: Cyril Rajnák, Ján Titiš, Roman Boča
Format: Article
Language:English
Published: MDPI AG 2021-05-01
Series:Magnetochemistry
Subjects:
slow magnetic relaxation
single ion magnets
reciprocating thermal behavior
cobalt(II) complexes
Online Access:https://www.mdpi.com/2312-7481/7/6/76
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spelling doaj-5667cf66dd2d4f49bacf25048683d6172021-06-01T01:04:00ZengMDPI AGMagnetochemistry2312-74812021-05-017767610.3390/magnetochemistry7060076Reciprocating Thermal Behavior in Multichannel Relaxation of Cobalt(II) Based Single Ion MagnetsCyril Rajnák0Ján Titiš1Roman Boča2Department of Chemistry, Faculty of Natural Sciences, University of SS Cyril and Methodius, 91701 Trnava, SlovakiaDepartment of Chemistry, Faculty of Natural Sciences, University of SS Cyril and Methodius, 91701 Trnava, SlovakiaDepartment of Chemistry, Faculty of Natural Sciences, University of SS Cyril and Methodius, 91701 Trnava, SlovakiaA series of mononuclear Co(II) complexes showing slow magnetic relaxation is assessed from the point of view of relaxation mechanisms. In certain cases, the reciprocating thermal behavior is detected: On cooling, the slow relaxation time is prolonged until a certain limit and then, unexpectedly, is accelerated. The low-temperature magnetic data can be successfully fitted by assuming Raman and/or phonon bottleneck mechanisms of the slow magnetic relaxation for the high-frequency relaxation channel. An additional term with the negative temperature exponent is capable of reproducing the whole experimental dataset.https://www.mdpi.com/2312-7481/7/6/76slow magnetic relaxationsingle ion magnetsreciprocating thermal behaviorcobalt(II) complexes
collection DOAJ
language English
format Article
sources DOAJ
author Cyril Rajnák
Ján Titiš
Roman Boča
spellingShingle Cyril Rajnák
Ján Titiš
Roman Boča
Reciprocating Thermal Behavior in Multichannel Relaxation of Cobalt(II) Based Single Ion Magnets
Magnetochemistry
slow magnetic relaxation
single ion magnets
reciprocating thermal behavior
cobalt(II) complexes
author_facet Cyril Rajnák
Ján Titiš
Roman Boča
author_sort Cyril Rajnák
title Reciprocating Thermal Behavior in Multichannel Relaxation of Cobalt(II) Based Single Ion Magnets
title_short Reciprocating Thermal Behavior in Multichannel Relaxation of Cobalt(II) Based Single Ion Magnets
title_full Reciprocating Thermal Behavior in Multichannel Relaxation of Cobalt(II) Based Single Ion Magnets
title_fullStr Reciprocating Thermal Behavior in Multichannel Relaxation of Cobalt(II) Based Single Ion Magnets
title_full_unstemmed Reciprocating Thermal Behavior in Multichannel Relaxation of Cobalt(II) Based Single Ion Magnets
title_sort reciprocating thermal behavior in multichannel relaxation of cobalt(ii) based single ion magnets
publisher MDPI AG
series Magnetochemistry
issn 2312-7481
publishDate 2021-05-01
description A series of mononuclear Co(II) complexes showing slow magnetic relaxation is assessed from the point of view of relaxation mechanisms. In certain cases, the reciprocating thermal behavior is detected: On cooling, the slow relaxation time is prolonged until a certain limit and then, unexpectedly, is accelerated. The low-temperature magnetic data can be successfully fitted by assuming Raman and/or phonon bottleneck mechanisms of the slow magnetic relaxation for the high-frequency relaxation channel. An additional term with the negative temperature exponent is capable of reproducing the whole experimental dataset.
topic slow magnetic relaxation
single ion magnets
reciprocating thermal behavior
cobalt(II) complexes
url https://www.mdpi.com/2312-7481/7/6/76
work_keys_str_mv AT cyrilrajnak reciprocatingthermalbehaviorinmultichannelrelaxationofcobaltiibasedsingleionmagnets
AT jantitis reciprocatingthermalbehaviorinmultichannelrelaxationofcobaltiibasedsingleionmagnets
AT romanboca reciprocatingthermalbehaviorinmultichannelrelaxationofcobaltiibasedsingleionmagnets
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