Role of ytterbium on structural and magnetic properties of NiCr0.1Fe1.9O4 co-precipitated ferrites
| Autor: | Bilal Akram, Weng-Chon Cheong, Shu-Sen Liu, Gulfam Nasar, Muhammad Azhar Khan, Mushtaq Ahmad, Adeel Hussain Chughtai, Azhar Mahmood |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Ytterbium Materials science Dopant Process Chemistry and Technology Spinel Analytical chemistry chemistry.chemical_element 02 engineering and technology Dielectric engineering.material Coercivity 021001 nanoscience & nanotechnology 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry Remanence 0103 physical sciences Materials Chemistry Ceramics and Composites engineering Dielectric loss Crystallite 0210 nano-technology |
| Zdroj: | Ceramics International. 44:5433-5439 |
| ISSN: | 0272-8842 |
| Popis: | Ytterbium (Yb) doped NiCr 0.1 Yb x Fe 1.9−x O 4 (x = 0.00, 0.002, 0.04, 0.06, 0.08) spinel ferrites with different crystallite sizes have been prepared by co-precipitation technique and their magnetic and dielectric properties were investigated. X-ray diffraction data suggested that, after doping, all the samples possess a main spinel phase along with few traces of YbFeO 3 (secondary phase). The addition of Yb 3+ resulted in a decrease of crystallite size and an increase in X-ray density. The magnetic measurements indicated that saturation magnetization (M s ), coercivity (H c ) and remanence (M r ) of all the samples decreased by increasing dopant (Yb) concentration. Dielectric constant, dielectric loss and tan loss were also minimized with the increase in frequency as well as increase in the concentration of Yb 3+ ions in the nickel chromium based spinel ferrites. AC conductivity was directly proportional to frequency and inversely proportional to concentration of Yb 3+ ions. These ytterbium doped nickel ferrites may be potential candidates for the fabrication and development of high frequency switching devices. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect