Please use this identifier to cite or link to this item: https://doi.org/10.1002/chem.201905796
Title: Coexistence of Spin-Lattice Relaxation and Phonon-Bottleneck Processes in Gd-III-Phthlocyaninato Triple-Decker Complexes under Highly Diluted Conditions
Authors: Horii, Yoji
Katoh, Keiichi
Miyazaki, Yuji
Damjanovic, Marko
Sato, Tetsu
Ungur, Liviu 
Chibotaru, Liviu F
Breedlove, Brian K
Nakano, Motohiro
Wernsdorfer, Wolfgang
Yamashita, Masahiro
Keywords: Science & Technology
Physical Sciences
Chemistry, Multidisciplinary
Chemistry
gadolinium
magnetic properties
phonon-bottleneck effect
porphyrinoids
spin-lattice relaxation
SLOW MAGNETIC-RELAXATION
PARAMAGNETIC RELAXATION
ANISOTROPY
PHTHALOCYANINE
Issue Date: 5-Jun-2020
Publisher: WILEY-V C H VERLAG GMBH
Citation: Horii, Yoji, Katoh, Keiichi, Miyazaki, Yuji, Damjanovic, Marko, Sato, Tetsu, Ungur, Liviu, Chibotaru, Liviu F, Breedlove, Brian K, Nakano, Motohiro, Wernsdorfer, Wolfgang, Yamashita, Masahiro (2020-06-05). Coexistence of Spin-Lattice Relaxation and Phonon-Bottleneck Processes in Gd-III-Phthlocyaninato Triple-Decker Complexes under Highly Diluted Conditions. CHEMISTRY-A EUROPEAN JOURNAL 26 (36) : 8076-8082. ScholarBank@NUS Repository. https://doi.org/10.1002/chem.201905796
Abstract: Gd3+ complexes have been shown to undergo unusual slow magnetic relaxation processes similar to those of single-molecule magnets (SMMs), even though Gd3+ does not exhibit strong magnetic anisotropy. To reveal the origin of the slow magnetic relaxation of Gd3+ complexes, we have investigated the magnetic properties and heat capacities of two Gd3+-phthalocyaninato triple-decker complexes, one of which has intramolecular Gd3+–Gd3+ interactions and the other does not. It was found that the Gd3+–Gd3+ interactions accelerate the magnetic relaxation processes. In addition, magnetically diluted samples, prepared by doping a small amount of the Gd3+ complexes into a large amount of diamagnetic Y3+ complexes, underwent dual magnetic relaxation processes. A detailed dynamic magnetic analysis revealed that the coexistence of spin–lattice relaxation and phonon-bottleneck processes is the origin of the dual magnetic relaxation processes.
Source Title: CHEMISTRY-A EUROPEAN JOURNAL
URI: https://scholarbank.nus.edu.sg/handle/10635/228893
ISSN: 09476539
15213765
DOI: 10.1002/chem.201905796
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