Low electron density of states at the boron site of TMB2 (TM = Ti, Zr, Hf, and Nb): a 11B NMR study

Nanoscaled Metal Borides and Phosphides: Recent Developments and Perspectives

“…Nevertheless, modern NMR devices and sequences allow us to measure significant signals also from these paramagnetic media. Because of the high conductivity of borides, their solid state NMR spectra often exhibit Knight shifts. , These shifts, together with spin–lattice relaxation rates and electric field gradients, are not only useful for probing the crystallographic structure, but they also provide valuable information on the charge distribution around the nuclei and the density of state (DOS) close to the Fermi level. ,, The occurrence of superconductivity was also investigated by 11 B NMR on ternary rare earth diborides RERuB 2 − and MgB 2 . − Analyses with regard to predictions from DFT calculations have proved to provide deep insights into the DOS structure, for instance of transition metal diborides, metal rare earth hexaborides (LaB 6 , PrB 6 , SmB 6 ), rhenium borides, , yttrium borides, ,, dodecaborides, lanthanum hexaboride, and rare earth metal silicide borides . Other nuclei than 11 B can be used .…”