Repozytorium Uniwersytetu Jagiellońskiego

Structural and magnetic studies of a new Co(II) thiocyanato coordination polymer showing slow magnetic relaxations and a metamagnetic transition

Structural and magnetic studies of a new Co(II) ...

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dc.contributor.author Woehlert, Susanne pl
dc.contributor.author Fic, Tomasz pl
dc.contributor.author Tomkowicz, Zbigniew [SAP11006648] pl
dc.contributor.author Ebbinghaus, Stefan G. pl
dc.contributor.author Rams, Michał [SAP11016294] pl
dc.contributor.author Haase, Wolfgang pl
dc.contributor.author Näther, Christian pl
dc.date.accessioned 2015-06-23T10:09:55Z
dc.date.available 2015-06-23T10:09:55Z
dc.date.issued 2013 pl
dc.identifier.issn 0020-1669 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/10095
dc.language eng pl
dc.rights Dodaję tylko opis bibliograficzny *
dc.rights.uri *
dc.title Structural and magnetic studies of a new Co(II) thiocyanato coordination polymer showing slow magnetic relaxations and a metamagnetic transition pl
dc.type JournalArticle pl
dc.description.physical 12947-12957 pl
dc.abstract.en Reaction of Co(NCS)_{2} with 4-ethylpyridine leads to the formation of three new compounds of composition Co(NCS)_{2} (4-ethylpyridine)_{4} (1), [(Co(NCS)_{2}]_{2}(4-ethylpyridine)_{6} (2), and [Co(NCS)_{2}(4-ethylpyridine)_{2}]_{n} (3). In all compounds the coordination of the Co(II) ions is distorted octahedral. 1 consists of discrete monomeric complexes and in 2 two Co(II) cations are linked by pairs of \mu -1,3-bridging thiocyanato ligands into dimers. In the crystal structure of 3 the Co(II) cations are connected into chains by the same bridge as in 2. Magnetic studies show that 1 and 2 are paramagnets down to a temperature of 2 K, while compound 3, which is the main object of this study, is an antiferromagnet with the Néel temperature T_{N} = 3.4 K. Its magnetic structure is built from ferromagnetic chains, which are weakly antiferromagnetically coupled. With increasing magnetic field a metamagnetic transition starts at \sim 175 Oe, as observed for a polycrystalline sample. Magnetic relaxations, which were observed in the antiferromagnetic state, are retained at the metamagnetic transition. With decreasing field 3 remains in a state, in which except of the faster magnetic relaxation process in single chains also a slower process coexists resulting in the appearance of a magnetic hysteresis loop. pl
dc.description.volume 52 pl
dc.description.number 22 pl
dc.description.publication 1 pl
dc.identifier.doi 10.1021/ic4012235 pl
dc.identifier.eissn 1520-510X pl
dc.title.journal Inorganic Chemistry pl
dc.language.container eng pl
dc.affiliation Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego pl
dc.subtype Article pl
dc.rights.original bez licencji pl
.pointsMNiSW [2013 A]: 40


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