Magnetic behaviour of x Nd ₂ O ₃ (1 − x )[0.95Na ₂ B ₄ O ₇ ·0.05PbO] glasses

Abstract

Glasses of the xNd2O3(1 − x) [0.95Na2B4O7 • 0.05PbO] system with 0.01 ≤ x ≤ 0.25 were studied using magnetic susceptibility measurements. The magnetic behaviour of these glasses is due to the presence of Nd 3+ ions in the glass matrix. For the xNd2O3 •(1−x)Na2B4O7 glasses with x ≤ 0.05 the magnetic neodymium ions appear as isolated species. For higher x values these glasses present a mictomagnetic-type magnetic behaviour and both isolated and antiferromagnetically coupled pairs appear in the host glass matrix.