Influence of Addition of Nanoparticles of Magnetic Phase on Structural, Microstructural and Dielectric Properties of Multiferroic Composites. Issue 203 (22nd November 2019)

• Record Type: Journal Article
• Authors: Pahuja, Poonam; Tomar, Amit; Tandon, R. P.
• Is Part Of: Integrated ferroelectrics. Issue 203(2019)
• Page Start: 156
• Page End: 163
• Publication Date: 2019-11-22
• Subjects: Composite -- nanoparticles -- ferroelectric; Ferroelectric devices -- Periodicals; Integrated circuits -- Periodicals; 537.244805
• DOI: 10.1080/10584587.2019.1674948
• Languages: English
• ISSNs: 1058-4587

Abstract

Abstract: In this paper, effect of addition of nano-particles of Nickel zinc ferrite on structural, microstructural, dielectric properties of multiferroic composite with compositional formula (x) Ni0.6 Zn0.4 Fe2 O4 + (100-x) Ba0.95 Sr0.05 TiO3 (NZF-BST) (where x = 10, 20, 30, 40 wt.%) has been studied. Nanoparticles of NZF have been prepared by the co-precipitation method. Transmission electron microscopy (TEM) analysis shows that NZF nanoparticles exhibit square and rod like structure. X-ray analysis along with Rietveld refinement confirms increase in lattice constant of both the phases BST and NZF in the composite samples. Scanning electron microscopy (SEM) indicates NZF nanoparticles enter in spaces between consecutive BST grains resulting in their greater interfacial contact. In composite sample, with x = 40 wt. %, NZF nanoparticles are arranged in a flower like pattern in BST grains. Composite sample with x = 20 wt. % possesses highest value of dielectric constant. Dielectric peak corresponding to Curie temperature of BST, get suppressed with increase in content of NZF nanoparticles.