Physical Properties Study of Zn0.5Mn0.5−xLi2xFe2O4 Nanoparticle Series that Prepared by Co-Precipitation Method

Co-precipitation is an important issue in chemical analysis, where it is often undesirable, but in some cases, it can be exploited. The Zn0.5Mn0.5−xLi2xFe2O4 nanomaterials (x = 0.0, 0.1, 0.2, 0.3 and 0.4) was afforded by utilizing co-precipitation method. The structural and optical characteristics were analyzed for the samples employing X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR) and Ultraviolet-visible spectrophotometer (UV-Vis). XRD revealed that the structure of certain nanoparticles is a cubic spinel with space group (Fd-3m) and crystallite size in the scale 124 150 nm. Lattice parameter was determined to increments with Li and that may occur due to the larger ionic radius of the Li ion. FTIR spectroscopy confirmed the form of spinel ferrite and explicated the properties of absorption bands approximately 593, 1111, 1385, 1640, 2922 and 3430. The energy band gap was estimated for all samples with diverse ratios and was observed in the range of 2.58 2.52 eV.


Introduction
Nanomaterials engineering is one of today's most promising fields of materials science, they are utilized in different fields. Among the huge number of nanomaterials, rare-earth-doped trifluoride nanoparticles (NPs) have a special place mainly because of their excellent photostability, long luminescent lifetimes, and sharp emission bands which are highly important for industrial and biomedical applications [1]. Particles in the size scale from 1 nm to 100 nm can perform novel physical, chemical and structural properties effect of quantum confinement and surface influences that may obtain numerous significant technological forms [2] [3] [4]. Nanotechnology studies are recognized as a highly significant fundamental technology in science. Nanoferrite is a famous magnetic nanomaterial considered as a writing media as a result of their chemical, physical and structural features [5] [6] [7]. Certain characteristics execute ferrites as an ideal for scientific applications [8]. Spinel ferrite Nanomaterials have AB 2 O 4 are substances of today's examination as a result of their unusual physical, and chemical properties [9]. The characteristics are dependent on the essence of cations, where A and B as transition elements, normally involving iron [10]. The different processes of construction have been improved to found Nanomaterials, such as a solid-state convention, sol-gel [11], co-precipitation [12], hydrothermal [13], and combustion route [14].
The chemical co-precipitation approach displayed to be the most suitable system for the preparation of Zn-Co-Mn nanomaterials. It is so easy and has much control over the crystalline size and other characteristics of the materials [15]. Many researchers practiced the co-precipitation process to successfully prepare their different specimens. Amongst those, P. Kumar et al. [16] applied co-precipitation to fix CoFe 2−x GdO 4 . The construction of TiO 2 nanomaterials utilizing a wet chemical method was taken out by S. Sagadevan [17].
In this paper, Zn 0.5 Mn 0.5−x Li 2x Fe 2 O 4 (x = 0.0, 0.1, 0.2, 0.3 and 0.4) will be prepared utilizing co-precipitation processes. X-ray diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR) apply to examine the structure of B-site replaced Li 1+ Nano ferrites and to discover the crystal structure of the specimens. Ultraviolet-visible spectrometer (UV) and apply to study the optical properties of crystalline nanomaterials.

Material and Method
Mn-Zn nanoferrite (Zn 0.5 Mn 0.5−x Li 2x Fe 2 O 4 ) materials were provided with the co-precipitation process. Stoichiometric values from pure rare substances of

Results and Discussion
, cos That result determined that the specimens were crystallite in the Nano size at

FTIR Analysis
The infrared spectra of manufactured powders were obtained by Mattson Fourier Transform Infrared Spectrophotometer in 400 to 4000 areas which were exhibited in Figure 2 that usually used to study the molecules binding and forma-

UV Visible Analysis
UV.vis absorption of the specimens is exposed in Figure 3. High absorption for  [20].
where α is the absorption coefficient and A is identified as edge width parameter, Eg is the bandgap, n = (1/2, 1, 2) is the constant retainer on the degree of transition, ( hυ ) is incident photon energy.

Conclusion
Zn 0.5 Mn 0.5−x Li 2x Fe 2 O 4 materials were fixed strongly by the co-precipitation way.
The structure of the single-phase crystallite structure with size in the range of 124 -150 nm was established by X-ray diffraction. Lattice parameters obtained rise with Li +1 increasing and this may be due to the larger ionic radius of the Li 1+ ion. FTIR spectrum showed expected main absorption bands, of spinel structure.
Optical band gap energy Zn 0.5 Mn 0.5−x Li 2x Fe 2 O 4 nano ferrite founded to be in the range 2.525 to 2.585 eV for specimens with different ratios of Mn 2+ and Li 1+ . The synthesized materials are assumed to be beneficial in many applications like magneto resonance.