Publikationsrepositorium - Helmholtz-Zentrum Dresden-Rossendorf

The metal-organic compound Cu(pz)₂(2-OHpy)₂, as well as high-field magnetometry. A low-temperature Minimum of the temperature-dependent local and uniform magnetizations at 𝑇_𝑚𝑖𝑛 indicates a presence of the magnetic order. Within the ordered state, a splitting of the ¹H NMR spectra reveals commensurate AF order, presumably of checkerboard type. The phase transition, manifested as a sharp maximum of the temperature-dependent ³¹P nuclear spin-lattice relaxation rate 1/𝑇₁, occurs at temperatures slightly lower than 𝑇_𝑚𝑖𝑛, indicating an easy-plane anisotropy as well as a crossover between isotropic and XY behavior.