Colossal magnetostriction and electrostriction of bismuth-substituted neodymium iron garnet films

• Published in: Journal of magnetism and magnetic materials 2018-10, Vol.464, p.44-49
• Main Authors: Aplesnin, S.S., Masyugin, A.N., Sitnicov, M.N., Rybina, U.I., Ishibashi, Takayuki
• Format: Article
• Language: English
• Subjects: Anisotropy; Bismuth; Electrostriction; Gadolinium; Gallium; Iron; Magnetic fields; Magnetostriction; Neodymium; Substitutes; Substrates; Thermal expansion
• ISSN: 0304-8853; 1873-4766
• DOI: 10.1016/j.jmmm.2018.05.038

Fig. 1 Thermal expansion. Fig. 2 The temperature dependence of magnetostriction constant. Fig. 3 Electrostriction as a function of electric field. [Display omitted] •The relative change in the length of Nd1Bi2Fe5O12(450 nm)/Nd2Bi1Fe4Ga1O12(90 nm) films deposited onto glass and Nd0.5Bi2.5Fe5O12(450 nm) films on a (111) single-crystal Gd3Ga5O12 garnet at the heating is determined.•A maximum in the temperature dependence of magnetostriction and electrostriction was revealed. Above 300 K, a change in the magnetostriction sign is found. Electro- and magnetostriction mechanisms and temperature behavior of the length of bismuth-substituted neodymium iron garnet films on glass and gallium gadolinium garnet have been investigated. Electric- and magnetic-field and temperature dependences of the electro- and magnetostriction constants have been determined. It has been established that the magnetostriction constant changes its sign upon temperature variation. The experimental data are explained using a model of dipole glass with the magnetoelectric and magnetoelastic interaction.