Concerning the Magnetic Susceptibility of Praseodymium Oxides

Abstract

Polycrystalline specimens of the compound PrO2 were prepared at high oxygen pressures (200–2000 atm). The phase so formed appears to be antiferromagnetic with a Néel temperature at 14°K. In contrast to this, measured susceptibilities of PrO2 prepared at lower oxygen pressures are reported to indicate the absence of cooperative effects. Phase relations of the system praseodymium—oxygen are examined to explain the discrepancy between the two data.