Effect of uniform pressure on magnetization and magnetic phase diagram of terbium single crystal

• Published in: Journal of magnetism and magnetic materials 1991, Vol.92 (3), p.397-404
• Main Authors: Nikitin, S.A., Tishin, A.M., Bezdushnyi, R.V., Spichkin, Yu.I., Red'ko, S.V.
• Format: Article
• Language: English
• Subjects: Applied sciences; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Magnetic properties and materials; Magnetomechanical and magnetoelectric effects, magnetostriction; Metals. Metallurgy; Physics
• ISSN: 0304-8853
• DOI: 10.1016/0304-8853(91)90854-4

The effect of uniform pressure on magnetization of a terbium single crystal (Δσ-effect) in the temperature range 80–330 K in magnetic fields up to 14 kOe has been studied. Terbium volume magnetostriction which in the vicinity of the Néel temperature in the magnetic field H = 13 kOe acquires enormous values of ω = 650 × 10 −6, was concluded on the basis of experimental data for Δσ-effect. It has been shown that in terbium the dependence of the magnetic anisotropy constant on pressure in the base-plane is well described by the magnetic anisotropy single-ion theory. The terbium magnetic phase diagram exhibits an anomaly in the vicinity of T≈223 K caused by helicoid angle passage of 18° value. The effect of pressure on temperatures of magnetic phase transitions, critical fields of helicoidal antiferromagnetic ordering destruction, paramagnetic Curie temperature and efficient magnetic moment has been studied.