Magnetic ground state and 2D behavior in pseudo-Kagome layered system Cu3Bi(SeO3)2O2Br

Abstract

Anisotropic magnetic properties of a layered kagome-like system Cu3Bi(SeO3)2O2Br have been studied by bulk magnetization and magnetic susceptibility measurements as well as powder and single-crystal neutron diffraction. At T_N = 27.4 K the system develops an alternating antiferromagnetic order of (ab) layers, which individually exhibit canted ferrimagnetic moment arrangement, resulting from the competing ferro- and antiferro-magnetic intralayer exchange interactions. A magnetic field B_C ~ 0.8 T applied along the c axis (perpendicular to the layers) triggers a metamagnetic transition, when every second layer flips, i.e., resulting in a ferrimagnetic structure. Significantly higher fields are required to rotate the ferromagnetic component towards the b axis (~7 T) or towards the a axis (~15 T). The estimates of the exchange coupling constants and features indicative of an XY character of this quasi-2D system are presented.

7 pages, 6 figures, final version

References in corpus (5)

• Critical Phenomena and Renormalization-Group Theory
• Anisotropic Spin Hamiltonians due to Spin-Orbit and Coulomb Exchange Interactions
• Universal Window for Two Dimensional Critical Exponents
• Refining the Spin Hamiltonian in the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu${}_3$(OH)${}_6$Cl${}_2$ using Single Crystals
• Structural and magnetic dimers in the spin-gapped system CuTe2O5

Cited by in corpus (13)

• Quantum Magnetism in Minerals
• Spin torque and Nernst effects in Dzyaloshinskii-Moriya ferromagnets
• Infrared phonon anomaly and magnetic excitations in single-crystal Cu${}_3$Bi(SeO${}_3$)${}_2$O${}_2$Cl
• Frustration and Dzyaloshinsky-Moriya anisotropy in the kagome francisites Cu${}_3$Bi(SeO${}_3{)}_2$O${}_2$X
• Magnetic and dielectric order in the kagome-like francisite Cu${}_3$Bi(SeO${}_3$)${}_2$O${}_2$Cl
• Archetypal soft-mode driven antipolar transition in francisite Cu3Bi(SeO3)2O2Cl
• Antiferroelectric instability in kagome francisites Cu${}_3$Bi(SeO${}_3$)${}_2$O${}_2$X (X = Cl, Br)
• First-principles study of the magnetic ground state in kagome francisites Cu3Bi(SeO3)2O2X (X=Cl, Br)
• Longitudinal magnon, inversion breaking and magnetic instabilities in the pseudo-Kagome francisites Cu3Bi(SeO3)2O2X with X=Br, Cl
• Copper Tellurium Oxides - A Playground for Magnetism
• Hybridization and spin-orbit coupling effects in quasi-one-dimensional spin-1/2 magnet Ba3Cu3Sc4O12
• THz spectroscopy in the pseudo-Kagome system Cu3Bi(SeO3)2O2Br
• Linear magnetoelastic coupling and magnetic phase diagrams of the buckled-kagomé antiferromagnet Cu${}_3$Bi(SeO${}_3$)${}_2$O${}_2$Cl