Low dielectric constant and signature of ferroelectric nature in transition metal (Co, Ni, Cu)-doped Mg0.5Zn0.5Al2O4 aluminates
This paper throws light on the preparation of transition metal-doped Mg0.5−xTMxZn0.5Al2O4 (x=0, 0.05 and TM=Co, Ni, Cu) aluminates via solid-state reaction route. The X-ray diffraction characterization analysis confirmed that all the samples have crystallized into the psuedocubic phase having space...
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| Format: | Article |
| Language: | English |
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World Scientific Publishing
2019-08-01
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| Series: | Journal of Advanced Dielectrics |
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| Online Access: | http://www.worldscientific.com/doi/pdf/10.1142/S2010135X19500346 |
| _version_ | 1818911049354575872 |
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| author | M. Saleem M. Padole A. Mishra |
| author_facet | M. Saleem M. Padole A. Mishra |
| author_sort | M. Saleem |
| collection | DOAJ |
| description | This paper throws light on the preparation of transition metal-doped Mg0.5−xTMxZn0.5Al2O4 (x=0, 0.05 and TM=Co, Ni, Cu) aluminates via solid-state reaction route. The X-ray diffraction characterization analysis confirmed that all the samples have crystallized into the psuedocubic phase having space group Fd3m and were single phased. The incorporation of transition metals viz. Co2+, Ni2+, Cu2+ in the Mg0.5Zn0.5Al2O4 matrix does not result in the appearance of new peaks or any considerable shift in diffraction peaks within the limits of XRD experimentation. This infers homogeneous dispersion of dopants at the Mg-site which is attributed to nearly same ionic radii of the dopants to that of Mg-site in Mg0.5Zn0.5Al2O4. Lattice structure, bonding nature and hence the spinel formation were verified through Raman scattering technique. The compositional verification was carried out via energy dispersive analysis of X-rays (EDAX). The surface morphology and hence the microstructural studies were carried out using field emission scanning electron microscopy (FESEM). The synthesized Mg0.5−xTMxZn0.5Al2O4 (x=0, 0.05 and TM=Co, Ni, Cu) aluminate samples were tested for polarization studies keeping their insulating nature into consideration and they displayed a sign of well-behaved P-E loop. |
| first_indexed | 2024-12-19T22:52:31Z |
| format | Article |
| id | doaj.art-e876dd62964c4419a53961cd93f6c276 |
| institution | Directory Open Access Journal |
| issn | 2010-135X 2010-1368 |
| language | English |
| last_indexed | 2024-12-19T22:52:31Z |
| publishDate | 2019-08-01 |
| publisher | World Scientific Publishing |
| record_format | Article |
| series | Journal of Advanced Dielectrics |
| spelling | doaj.art-e876dd62964c4419a53961cd93f6c2762022-12-21T20:02:45ZengWorld Scientific PublishingJournal of Advanced Dielectrics2010-135X2010-13682019-08-01941950034-11950034-810.1142/S2010135X1950034610.1142/S2010135X19500346Low dielectric constant and signature of ferroelectric nature in transition metal (Co, Ni, Cu)-doped Mg0.5Zn0.5Al2O4 aluminatesM. Saleem0M. Padole1A. Mishra2Materials Science Laboratory, School of Physics, Vigyan Bhawan, Devi Ahilya University, Khandwa Road Campus, Indore 452001, IndiaMaterials Science Laboratory, School of Physics, Vigyan Bhawan, Devi Ahilya University, Khandwa Road Campus, Indore 452001, IndiaMaterials Science Laboratory, School of Physics, Vigyan Bhawan, Devi Ahilya University, Khandwa Road Campus, Indore 452001, IndiaThis paper throws light on the preparation of transition metal-doped Mg0.5−xTMxZn0.5Al2O4 (x=0, 0.05 and TM=Co, Ni, Cu) aluminates via solid-state reaction route. The X-ray diffraction characterization analysis confirmed that all the samples have crystallized into the psuedocubic phase having space group Fd3m and were single phased. The incorporation of transition metals viz. Co2+, Ni2+, Cu2+ in the Mg0.5Zn0.5Al2O4 matrix does not result in the appearance of new peaks or any considerable shift in diffraction peaks within the limits of XRD experimentation. This infers homogeneous dispersion of dopants at the Mg-site which is attributed to nearly same ionic radii of the dopants to that of Mg-site in Mg0.5Zn0.5Al2O4. Lattice structure, bonding nature and hence the spinel formation were verified through Raman scattering technique. The compositional verification was carried out via energy dispersive analysis of X-rays (EDAX). The surface morphology and hence the microstructural studies were carried out using field emission scanning electron microscopy (FESEM). The synthesized Mg0.5−xTMxZn0.5Al2O4 (x=0, 0.05 and TM=Co, Ni, Cu) aluminate samples were tested for polarization studies keeping their insulating nature into consideration and they displayed a sign of well-behaved P-E loop.http://www.worldscientific.com/doi/pdf/10.1142/S2010135X19500346Nanoparticlesstructuremorphologypolarization |
| spellingShingle | M. Saleem M. Padole A. Mishra Low dielectric constant and signature of ferroelectric nature in transition metal (Co, Ni, Cu)-doped Mg0.5Zn0.5Al2O4 aluminates Journal of Advanced Dielectrics Nanoparticles structure morphology polarization |
| title | Low dielectric constant and signature of ferroelectric nature in transition metal (Co, Ni, Cu)-doped Mg0.5Zn0.5Al2O4 aluminates |
| title_full | Low dielectric constant and signature of ferroelectric nature in transition metal (Co, Ni, Cu)-doped Mg0.5Zn0.5Al2O4 aluminates |
| title_fullStr | Low dielectric constant and signature of ferroelectric nature in transition metal (Co, Ni, Cu)-doped Mg0.5Zn0.5Al2O4 aluminates |
| title_full_unstemmed | Low dielectric constant and signature of ferroelectric nature in transition metal (Co, Ni, Cu)-doped Mg0.5Zn0.5Al2O4 aluminates |
| title_short | Low dielectric constant and signature of ferroelectric nature in transition metal (Co, Ni, Cu)-doped Mg0.5Zn0.5Al2O4 aluminates |
| title_sort | low dielectric constant and signature of ferroelectric nature in transition metal co ni cu doped mg0 5zn0 5al2o4 aluminates |
| topic | Nanoparticles structure morphology polarization |
| url | http://www.worldscientific.com/doi/pdf/10.1142/S2010135X19500346 |
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