Magnetic Properties and Phase Composition of Metamaterials Based on an Opal Matrix with 3d-Transition Metal Particles

• Published in: Physics of metals and metallography Vol. 119; no. 2; pp. 109 - 120
• Main Authors: Rinkevich, A. B., Korolev, A. V., Samoilovich, M. I., Perov, D. V., Nemytova, O. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-02-2018; Springer Nature B.V
• Subjects: Chemistry and Materials Science; Coercivity; Curie temperature; Electrical and Magnetic Properties; Hysteresis loops; Magnetic permeability; Magnetic properties; Magnetic saturation; Magnetism; Magnetization; Magnetization curves; Materials Science; Metal particles; Metallic Materials; Metamaterials; Phase composition; Temperature dependence; metamaterials; opal matrix; magnetization; metallic nanoparticles
• ISSN: 0031-918X; 1555-6190
• DOI: 10.1134/S0031918X18020084

The magnetic properties of metamaterials based on an opal matrix with transition-metal (iron, nickel, cobalt) particles have been studied. Magnetization curves and magnetic hysteresis loops have been measured and the dependences of real and imaginary parts of magnetization have been determined using the dynamic ac susceptibility measuring procedure. Structural studies of metamaterials have been performed. The saturation magnetization and coercive force of the studied metamaterials have been found to depend weakly on the temperature. The temperature dependence of magnetic susceptibility at a temperature above 30 K can be described adequately by Curie–Weiss law and, at lower temperature, deviates from the law.