Magnetic studies on mixed metal oxalate bridged compounds NBu4MAIInFeII1–n[FeIII(ox)3] (MA = Mn, Zn). (May 2014)

• Record Type: Journal Article
• Authors: Lin, Q.; He, Y.; Wang, R. J.; Chen, S. H.; Chen, H. N.; Li, X. G.
• Is Part Of: Materials research innovations. Volume 18(2014)Supplement 2
• Page Start: 559
• Page End: 563
• Publication Date: 2014-05
• Subjects: Molecule based magnet, -- Spin, -- Ferromagnetic, -- Oxalate legend, -- Magnetic interaction; Materials -- Research -- Periodicals; Matériaux -- Recherche -- Périodiques; 620.1105
• DOI: 10.1179/1432891714Z.000000000529
• Languages: English
• ISSNs: 1432-8917

Abstract

Abstract : The mixed metal oxalate bridged compounds NBu4 MA II n Fe II 1–n [Fe III (ox)3 ](MA = Mn, Zn) were investigated by magnetic measurements. The temperature dependence of the compounds NBu4 Zn II n Fe II 1–n [Fe III (OX)3 ] ( n = 0. 04, 0·08, 0·10) shows two temperature compensation points in the temperature range of 32–41·5 K and multiple magnetic pole reversals are observed in the material. When n ≧0·1 the temperature compensation point disappears, the value of M increases and exhibits weak irreversibility in the field cooled (FC) magnetisation curves. At the same time, spin glass state is founded below 35 K and the bifurcation of the zero field cooled and FC plots below the Neel temperature of 30 K indicates irreversibility. At the Neel temperature of 39·9 K, a compensation temperature and a spin canting are observed in the compound NBu4 Fe II 0·97 Mn II 0·03 [Fe III (OX)3 ].