A study on the spectral, microstructural, and magnetic properties of Eu-Nd double-substituted Ba0.5Sr0.5Fe12O19 hexaferrites synthesized by an ultrasonic-assisted approach

M A Almessiere; Y Slimani; A Demir Korkmaz; A Baykal; H Albetran; Tawfik A Saleh; M Sertkol; I Ercan

doi:10.1016/j.ultsonch.2019.104847

A study on the spectral, microstructural, and magnetic properties of Eu-Nd double-substituted Ba_0.5Sr_0.5Fe₁₂O₁₉ hexaferrites synthesized by an ultrasonic-assisted approach

Ultrason Sonochem. 2020 Apr:62:104847. doi: 10.1016/j.ultsonch.2019.104847. Epub 2019 Nov 4.

Authors

M A Almessiere¹, Y Slimani², A Demir Korkmaz³, A Baykal⁴, H Albetran⁵, Tawfik A Saleh⁶, M Sertkol⁷, I Ercan⁸

Affiliations

¹ Department of Biophysics, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, 31441 Dammam, Saudi Arabia; Department of Physics, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, 31441 Dammam, Saudi Arabia.
² Department of Biophysics, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, 31441 Dammam, Saudi Arabia. Electronic address: yaslimani@iau.edu.sa.
³ Department of Chemistry, Istanbul Medeniyet University, 34700 Istanbul, Uskudar, Turkey.
⁴ Department of Nanomedicine Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, 31441 Dammam, Saudi Arabia. Electronic address: abaykal@iau.edu.sa.
⁵ Department of Basic Sciences, College of Education, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, 31441 Dammam, Saudi Arabia.
⁶ Department of Chemistry, King Fahd University of Petroleum & Minerals (KFUPM), Dhahran, Saudi Arabia.
⁷ Deanship of Preparatory Year, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, 31441 Dammam, Saudi Arabia.
⁸ Department of Biophysics, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, 31441 Dammam, Saudi Arabia.

PMID: 31810870
DOI: 10.1016/j.ultsonch.2019.104847

Abstract

In this study, an examination on the spectral, microstructural, and magnetic characteristics of Eu-Nd double-substituted Ba_0.5Sr_0.5Fe₁₂O₁₉ hexaferrites (Ba_0.5Sr_0.5Nd_xEu_xFe_12-2xO₁₉ (x = 0.00-0.05) HFs) fabricated by an ultrasonic-assisted approach has been presented. An UZ SONOPULS HD 2070 ultrasonic homogenizer with frequency of 20 kHz and power of 70 W was used. The chemical bonding, structure and the morphology of the products were evaluated by Fourier-Transform Infrared (FT-IR) Spectroscopy, XRD (X-ray diffraction), scanning and transmission electron microscopy and techniques. The textural properties of the prepared nanomaterials were examined by using the Brunauer-Emmett-Teller (BET) method. The magnetic properties were studied using a vibrating sample magnetometer (VSM) at room temperature (RT) and low temperature 10 K. The magnitudes of various magnetic parameters including M_s (saturation magnetization), M_r (remanence) and H_c (coercivity) were estimated and evaluated. The M-H loops revealed the hard ferrimagnetic nature for all products at both temperatures. The M_s and M_r values showed a decreasing tendency with increasing degree of Eu³⁺ and Nd³⁺ substitutions whereas H_c values displayed an increasing trend. At RT, M_s, M_r and H_c values lie in the ranges of 63.0-68.8 emu·g^-1, 24.6-39.2 emu·g^-1 and 2252.4-2782.1 Oe, respectively. At 10 K, the values of M_s, M_r and H_c lie between 87.5-97.1 emu·g^-1, 33.5-40.1 emu·g^-1 and 2060.6-2417.2 Oe, respectively. The observed magnetic properties make the prepared products promising candidates to be applied in the recording media.

Keywords: BET analysis; M-type hexaferrites; Magnetic belongings; Rare earth doping; Ultrasonic sonochemistry.