New iodate fluoride RbCe(IO)F with nonlinear optical properties.

New noncentrosymmetric cerium(IV) iodate fluoride RbCe(IO)F was prepared employing a hydrothermal technique. The compound crystallizes in the 2 space group (#36) with cell parameters = 11.1518(6) Å, = 8.

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.

A cascade of magnetic phase transitions and a 1/3-magnetization plateau in selenite-selenate Co(SeO)(SeO)(OH) with kagomé-like Co ion layer arrangements: the importance of identifying a correct spin lattice.

We prepared a new compound, Co(SeO)(SeO)(OH), having layers in a kagomé-like arrangement of Co (spin = 3/2) ions. This phase crystallizes in the orthorhombic space group (62) with unit cell parameters = 11.225(9) Å, = 6.

Anhydrous copper tellurite disulfate CuTeO(SO) featuring the coexistence of spin singlets and a long-range antiferromagnetic order.

Anhydrous copper tellurite sulfate, CuTeO(SO), has been synthesized vapor transport reactions in sealed silica glass ampoules. In measurements of magnetization , magnetic susceptibility , specific heat and X-band electron spin resonance, a long-range antiferromagnetic order at = 13 K and an - magnetic phase diagram have been established. One-third of Cu ions were found to form magnetically silent dimers.

New Nabokoite-like Phases ACu TeO (SO ) Cl (A=Na, K, Rb, Cs) with Decorated and Distorted Square Kagome Lattices.

A new family of compounds ACu TeO (SO ) Cl (A=Na, K, Rb, Cs) isostructural to mineral Nabokoite (K species) was synthesized by solid state and gas transport reactions in sealed ampoules and characterized in measurements of magnetization and specific heat in a wide temperature range. These complex compounds are of the utmost interest as a testing playground to study the properties of quasi-two-dimensional magnets with a square kagome lattice geometry. A quantum ground state of such a corner-sharing network is a spin liquid.