Effect of 200 MeV Ag+15ion irradiation on magnetic and dielectric properties of nanocrystalline Zn–Cr ferrite
| Autor: | K. Asokan, Sudhish Kumar, K. B. Sharma, S. P. Pareek, S. N. Dolia, Arun S. Prasad, Arvind Samariya, M. S. Dhawan, P. K. Sharma |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Nuclear and High Energy Physics
Radiation Materials science Spinel Analytical chemistry Dielectric Crystal structure engineering.material Condensed Matter Physics Nanocrystalline material Condensed Matter::Materials Science Magnetization Nuclear magnetic resonance engineering Ferrite (magnet) General Materials Science Crystallite Superparamagnetism |
| Zdroj: | Radiation Effects and Defects in Solids. 168:525-531 |
| ISSN: | 1029-4953 1042-0150 |
| DOI: | 10.1080/10420150.2013.778857 |
| Popis: | Nanocrystalline samples of ZnCr0.4Fe1.6O4 ferrite were synthesized by the advanced sol–gel method to investigate the effect of 200 MeV Ag+15 ion irradiation on the cation distribution, magnetic and dielectric properties. Rietveld profile refinement of the X-ray diffraction (XRD) patterns confirms the single-phase cubic spinel structure of the specimens. The irradiated sample retains the cubic spinel structure with a slight increase in the lattice parameters and the average crystallite size. Temperature- and field-dependent dc magnetization studies show an appreciable enhancement in the saturation magnetization and blocking temperature of the irradiated samples, which could be attributed to the slight increase in the particle size due to the heat evolved during irradiation. Subsequently, the rearrangement of cations in the lattice structure and the ion-induced modifications on the surface states of the nanoparticles could be accountable. The room temperature dielectric constant and the loss tangent in the ... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
| Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |