Magnetic properties of monoclinic lanthanide metaborates, Ln(BO2)3, Ln  =  Pr, Nd, Gd, Tb. (1st September 2017)

• Record Type: Journal Article
• Authors: Mukherjee, P; Suard, E; Dutton, S E
• Is Part Of: Journal of physics. Volume 29:Number 40(2017)
• Publication Date: 2017-09-01
• Subjects: lanthanide metaborate -- monoclinic -- quasi-1D -- magnetic properties; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/aa8160
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: The bulk magnetic properties of the lanthanide metaborates, Ln (BO2 )3, Ln = Pr, Nd, Gd, Tb are studied using magnetic susceptibility, heat capacity and isothermal magnetisation measurements. They are found to crystallise in a monoclinic structure containing chains of magnetic Ln 3+ and could therefore exhibit features of low-dimensional magnetism and frustration. Pr(BO2 )3 is found to have a non-magnetic singlet ground state. No magnetic ordering is observed down to 0.4 K for Nd(BO2 )3 . Gd(BO2 )3 exhibits a sharp magnetic transition at 1.1 K, corresponding to 3D magnetic ordering. Tb(BO2 )3 shows two magnetic ordering features at 1.05 K and 1.95 K. A magnetisation plateau at a third of the saturation magnetisation is seen at 2 K for both Nd(BO2 )3 and Tb(BO2 )3, which persists in an applied field of 14 T. This is proposed to be a signature of quasi 1D behaviour in Nd(BO2 )3 and Tb(BO2 )3 .