Crystal structure of KMnPOF with short- and long-range order inside the layered magnetic system.

Potassium manganese fluoride phosphate, KMnPOF, has been obtained through mild hydrothermal synthesis and characterized by scanning electron microscopy, microprobe analysis and X-ray diffraction. The compound possesses an orthorhombic symmetry and chiral space group 222 with = 4.7884(2), = 9.

Thermodynamic Properties and DFT Study on Highly Frustrated CrBO: Coexistence of Spin-Singlets with Long-Range Magnetic Order.

The triangle-based magnetic subsystem of borates with the mineral norbergite structure MBO (M = Fe, Cr, V) makes these compounds unique to investigate rare quantum ground states influenced by strong magnetic frustration. In this work, we investigated the thermal and magnetic properties of CrBO to find that despite very large negative Weiss temperature Θ = -160.7 K, it orders only at = 4.