The Effect of Ca–Zr mole ratio on preparation, structural and magnetic properties of Ca–Zr doped Bi-YIG
- Department of Physics, Science and Research Branch, Islamic Azad University, Khouzestan (Iran, Islamic Republic of)
- Department of physics, Islamic Azad University, Najafabad Branch, Najafabad (Iran, Islamic Republic of)
Graphical abstract: - Highlights: • Ca–Zr substituted Bi-YIG has been prepared via mechanochemical processing and heat treatment. • Structural and magnetic properties were investigated. • Magnetic measurements showed the Ferrimagnetic behavior for pure garnet structure samples. • The spherical morphology of the nanoparticles was found from the SEM micrograph. - Abstract: Ca–Zr substituted (Bi-YIG) nanopowders with a nominal composition of BiY{sub 2−x}Ca{sub x}Zr{sub y}Fe{sub 5−y}O{sub 12} (x = y and x varied from 0.00 to 1.25 by the step of 0.25) were prepared by mechanochemical processing (MCP) and subsequent heat treatments. The effect of dopant mol ratios, on garnet phase formation were investigated by X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy. The lattice constant of the samples increased by increasing Zr{sup 4+} content (for x ≤ 1). Mean crystallite size of the single-phase powders, which was evaluated by Scherrer's formula, was about 35 nm. The experimental results show that the Ca–Zr substitution Bi-YIG lowers the calcining and sintering temperatures for x < 1. The results show that the single-phase nanopowders can be obtained at temperatures below 850 °C. The measurements of vibrating sample magnetometer (VSM) show that the saturation magnetization of the samples increases as x increase from 0.00 to 0.25 and then decreases by increasing x to the values greater than 0.25.
- OSTI ID:
- 22341729
- Journal Information:
- Materials Research Bulletin, Vol. 48, Issue 8; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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