ABSTRACT
The general magnetic characterisation of a series of materials in the BaNi2V2O8-BaNi2P2O8 layered honeycomb spin-1 system is reported. A change from dominantly 2-dimensional (2D) to dominantly 3-dimentional (3D) magnetic character is observed on progressing from the pure V to the pure P material. The change is continuous with composition in BaNi2(V1−xPx)2O8. But a variety of features in the temperature-dependent magnetic susceptibilities at low temperatures suggest that the magnetic system is complex. Although the Curie–Weiss temperature becomes less strongly negative on increasing the P content, an indication of increased competition between different types of magnetic coupling, the system does not appear to be approaching a quantum spin liquid state at low temperatures.
Acknowledgements
This research was supported by the Department of Energy, Division of Basic Energy Sciences, through the institute for Quantum Matter at Johns Hopkins University, grant DE-FG02-08ER46544. The authors gratefully acknowledge discussions with Oleg Tchernyshyov.
Disclosure statement
No potential conflict of interest was reported by the authors.
ORCID
Tai Kong http://orcid.org/0000-0002-5064-3464