@article{e4045f8692dc4604a7e851cc1989f9d0,
title = "Multiferroic properties of Ni0.5 Zn0.5 Fe2 O4 -Pb (Zr0.53 Ti0.47) O3 ceramic composites",
abstract = "We present a powder-in-sol precursor hybrid processing route to synthesize dense, homogenous, and fine-grained Ni0.5 Zn0.5 Fe2 O4 -Pb (Zr0.53 Ti0.47) O3 (NZFO-PZT) multiferroic ceramic composites and report their ferromagnetic- ferroelectric characteristics. Nanosized NZFO ferromagnetic powders are dispersed into PZT ferroelectric sol-gel precursor and uniformly distributed slurry is prepared by ball-milling mixing of the powder-precursor suspension prior to be sintered at low temperatures to form the composites. The composites show simultaneous effects of ferromagnetism and ferroelectricity at room temperature with excellent magnetic and dielectric properties for frequencies over 10 MHz. The coexistence of inductive and capacitive natures in the composites favors size reduction and design simplification in many passive electronic devices such as integrated filters and microwave absorbers.",
author = "Hongfang Zhang and Or, \{Siu Wing\} and Chan, \{Helen Lai Wa\}",
note = "Funding Information: This work was supported by the Research Grants Council of the HKSAR Government under Grant No. PolyU 5122/05E and the Niche Areas Project of The Hong Kong Polytechnic University under Grant No. I-BB95. FIG. 1. XRD patterns of (a) pure NZFO powders calcined at 1000 ° C , (b) pure PZT powders calcined at 700 ° C , (c) 25 wt \% composites sintered at 1000 ° C , (d) 50 wt \% composites sintered at 1000 ° C , and (e) 72 wt \% composites sintered at 1000 ° C . FIG. 2. XRD patterns of 50 wt \% composites sintered at different temperatures of 900, 1000, and 1100 ° C . FIG. 3. Field-emission SEM micrographs of (a) 25 wt \% composites sintered at 1000 ° C , (b) 50 wt \% composites sintered at 1000 ° C , and (c) 72 wt \% composites sintered at 1100 ° C . FIG. 4. Surface morphologies of 50 wt \% composites sintered at (a) 900, (b) 1000, and (c) 1100 ° C . FIG. 5. (a) Magnetization-magnetic field hysteresis loops of the 25 and 50 wt \% composites sintered at 1000 ° C and the 72 wt \% composites sintered at 1100 ° C and (b) their saturation magnetizations and coercive fields. FIG. 6. (a) Relative permeability and (b) quality factor as a function of frequency for the 25 and 50 wt \% composites sintered at 1000 ° C and the 72 wt \% composites sintered at 1100 ° C . FIG. 7. Polarization-electric field hysteresis loop of the 50 wt \% composites sintered at 1000 ° C . FIG. 8. (a) Temperature dependence of relative permittivity at 10 kHz for 25 and 50 wt \% composites sintered at 1000 ° C and 72 wt \% composites sintered at 1100 ° C and (b) temperature dependence of the relative permittivity for the 50 wt \% composites at different frequencies of 1 kHz–1 MHz. FIG. 9. (a) Relative permittivity and (b) loss tangent as a function of frequency for the 25 and 50 wt \% composites sintered at 1000 ° C and the 72 wt \% composites sintered at 1100 ° C . ",
year = "2008",
month = dec,
day = "8",
doi = "10.1063/1.3021349",
language = "English",
volume = "104",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics",
number = "10",
}