TY - JOUR
T1 - Structural, Magnetic, and Optical Studies of Ni–Mg Ferrites Synthesized by Polyol Method
AU - Dhanyaprabha, Krishna Pillai Chandrikamma
AU - Jacob, Bibin
AU - Mohan, Manoj
AU - Al-Omari, Imaddin A.
AU - Al-Harthi, Salim H.
AU - Myint, Myo T.Z.
AU - Thomas, Hysen
N1 - Funding Information:
The authors thank CLIF Kariavattom, CSIF, University of Calicut, and Sultan Qaboos University Oman for providing X-ray diffractometer, Brunauer, Emmett, and Teller, X-ray photoelectron spectroscopy, and vibrating sample magnetometer measurement facilities. The authors also thank UGC DAE Indore centre, for Mossbauer study and Dr. V.R. Reddy for the analysis of the result. K.C.D. wishes to acknowledge Department of Science and Technology, India, for financial support under WOS-A (SR/WOS-A/PM-65/2017) scheme.
Funding Information:
The authors thank CLIF Kariavattom, CSIF, University of Calicut, and Sultan Qaboos University Oman for providing X‐ray diffractometer, Brunauer, Emmett, and Teller, X‐ray photoelectron spectroscopy, and vibrating sample magnetometer measurement facilities. The authors also thank UGC DAE Indore centre, for Mossbauer study and Dr. V.R. Reddy for the analysis of the result. K.C.D. wishes to acknowledge Department of Science and Technology, India, for financial support under WOS‐A (SR/WOS‐A/PM‐65/2017) scheme.
Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/11
Y1 - 2021/11
N2 - Magnesium and nickel-substituted ferrites belong to an important class of spinel ferrites with wide variety of applications. Herein, preparation and characterization of pure, single-phase Ni–Mg ferrites using a cost-effective method, which yield high-quality nanosized particles with good chemical homogeneity, are reported. A series of NixMg(1−x)Fe2O4 nanocrystalline powders (x = 1,0.75,0.5,0.25,0) is prepared using polyol method and a detailed investigation on the effect of dopant substitution on microstructural magnetic as well as optical properties is conducted. The as-prepared samples are subsequently characterized using X-ray diffractometer (XRD), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR), Field-emission scanning electron microscope (FESEM), Brunauer, Emmett, and Teller (BET), Mossbauer spectroscopy, Vibrating sample magnetometer (VSM), and UV–visible diffuse reflectance spectroscopy. Rietveld refinement confirms the single-phase cubic structure with Fd-3m (227) space group of NixMg(1−x)Fe2O4 series. The cation distribution can be represented as [Mg(1−x−y)Fe(δ)]A[Mg(x)Ni(y)Fe(2−δ)]BO4. FTIR bands at the finger print region of ferrites and Mossbauer analysis confirms the proposed cation distribution from Rietveld refinement. The magnetic nature is confirmed from Mossbauer and VSM analysis. In VSM, the saturation magnetization of the samples exhibits an increasing trend with nickel substitution. The optical studies of the series NixMg(1−x)Fe2O4 are conducted by UV–visible diffuse reflectance spectroscopy.
AB - Magnesium and nickel-substituted ferrites belong to an important class of spinel ferrites with wide variety of applications. Herein, preparation and characterization of pure, single-phase Ni–Mg ferrites using a cost-effective method, which yield high-quality nanosized particles with good chemical homogeneity, are reported. A series of NixMg(1−x)Fe2O4 nanocrystalline powders (x = 1,0.75,0.5,0.25,0) is prepared using polyol method and a detailed investigation on the effect of dopant substitution on microstructural magnetic as well as optical properties is conducted. The as-prepared samples are subsequently characterized using X-ray diffractometer (XRD), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR), Field-emission scanning electron microscope (FESEM), Brunauer, Emmett, and Teller (BET), Mossbauer spectroscopy, Vibrating sample magnetometer (VSM), and UV–visible diffuse reflectance spectroscopy. Rietveld refinement confirms the single-phase cubic structure with Fd-3m (227) space group of NixMg(1−x)Fe2O4 series. The cation distribution can be represented as [Mg(1−x−y)Fe(δ)]A[Mg(x)Ni(y)Fe(2−δ)]BO4. FTIR bands at the finger print region of ferrites and Mossbauer analysis confirms the proposed cation distribution from Rietveld refinement. The magnetic nature is confirmed from Mossbauer and VSM analysis. In VSM, the saturation magnetization of the samples exhibits an increasing trend with nickel substitution. The optical studies of the series NixMg(1−x)Fe2O4 are conducted by UV–visible diffuse reflectance spectroscopy.
KW - Mossbauer
KW - Ni–Mg ferrites
KW - Rietveld
KW - cation distributions
KW - polyol method
UR - http://www.scopus.com/inward/record.url?scp=85117389749&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85117389749&partnerID=8YFLogxK
U2 - 10.1002/pssa.202100193
DO - 10.1002/pssa.202100193
M3 - Article
AN - SCOPUS:85117389749
SN - 1862-6300
VL - 218
JO - Physica Status Solidi (A) Applications and Materials Science
JF - Physica Status Solidi (A) Applications and Materials Science
IS - 22
M1 - 2100193
ER -