Muon-spin-rotation and magnetization study of metal-organic magnets based on the dicyanamide anion

T Jestädt, M Kurmoo, S J Blundell, F L Pratt, C J Kepert, Kosmas Prassides, Brendon W Lovett, I M Marshall, A Husmann, K H Chow, R M Valladares, C M Brown, A Lappas

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Abstract

We report the results of a study of the metal-organic magnets M-II[N(CN)(2)](2), where M-II = Ni, Co and Mn, using bulk magnetization and muon-spin relaxation (mu SR), Implanted muons are sensitive to the onset of long-range magnetic order in each of these materials and strong muon-spin relaxation is observed in the paramagnetic state due to low-frequency fluctuations of the electronic moments in the 10(9)-10(10) Hz range. The size of the muon-spin relaxation in the paramagnetic state can be related to the magnitude of the transition-metal-ion moment. Very strongly damped oscillations are observed below the magnetic transition temperature in Co[N(CN)(2)](2).

Original languageEnglish
Pages (from-to)2263-2270
Number of pages8
JournalJournal of Physics: Condensed Matter
Volume13
Issue number10
DOIs
Publication statusPublished - 12 Mar 2001

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