Influence of trivalent (Gd3+, Cr3+) ion substitution on the structural and magnetic properties of Ni0.4Zn0.6Cr0.5GdxFe1.5-xO4 ferrite nanoparticles
by M.K. Anupama; B. Rudraswamy; N. Dhananjaya
International Journal of Nanotechnology (IJNT), Vol. 14, No. 9/10/11, 2017

Abstract: We report on the influence of Gd3+ and Cr3+ doped nanocrystalline ferrite materials with a general formula of Ni0.4Zn0.6Cr0.5GdxFe1.5-xO4 (where x = 0.00, 0.02, 0.04, 0.06) have been synthesised by solution combustion method using oxylyl dehydrazide (ODH) as a fuel. The structural and magnetic properties of the samples were characterised by X-ray diffractometer (XRD), Fourier transform infrared (FTIR) spectroscopy and vibrating sample magnetometer (VSM). The XRD analysis of the as synthesised sample reveals single phase with spinel cubic structure (Fd-3m space group) and the average crystalline sizes of the nanoparticle were estimated using Debye Scherrer's formula and found to be 19-34 nm. The FTIR results show the functional groups of Ni-Zn ferrite the two main spectroscopic bands corresponding to lattice vibrations were observed in the wavelength range from 300 cm-1 to 1000 cm-1. The absorption bands at 577 cm-1 and 380 cm-1 were assigned to tetrahedral (A) and octahedral (B) groups respectively in all the samples. Also IR spectrum shows that Gd3+ occupies the octahedral B-sites. Magnetic parameters such as saturation magnetisation (Ms), remanence magnetisation (Mr) and coercivity (Hc) were measured from the hysteresis loop. The saturation magnetisation increases for x = 0.00, 0.02 and decreases. This kind of ferrites could be used to prepare magnetic fluids and also used for high frequency applications.

Online publication date: Sun, 24-Sep-2017

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Nanotechnology (IJNT):
Login with your Inderscience username and password:

    Username:        Password:         

Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email