Crystal Growth and Magnetic Susceptibility of Some Rare-Earth Compounds Part 2 Magnetic Susceptibility Measurements on a Number of Rare-Earth Compounds

Magnetic susceptibility measurements have been carried out on five series of rare-earth compounds using an ac mutual inductance technique. The compounds satisfy the general formulae RNbO4, R3NbO7, R2TiO5, R2Ti2O7, or RAIO(3) where R is a rare-earth ion. The measurements were mainly carried out in the helium range 1 to 4.2 degrees K, and the results analysed in terms of the general Van Vleck formula chi = C/(T + theta) + alpha. Many of the compounds were observed to undergo antiferromagnetic transitions, and in some cases showed evidence of extremely anisotropic behaviour above the Neel temperature.