The effect of Mg-Al additive composition on microstructure, magnetic properties, and microwave absorption on BaFe12− 2xMgxAlxO19 (x= 0–0.5) material synthesized …

M Rianna, M Situmorang, C Kurniawan, AP Tetuko… - Materials Letters, 2019 - Elsevier
The syntheses of BaFe 12− 2x Mg x Al x O 19 have been successfully carried out at x= 0–0.5
using the co-precipitation method and the precursors of BaCl 2, MgCl 2, Al 2 Cl 3 and …

Effect of Eu3+ ions on electrical and dielectric properties of barium hexaferrites prepared by solution combustion method

J Mahapatro, S Agrawal - Ceramics International, 2021 - Elsevier
This paper reports the electrical conduction behaviour of Eu 3+ substituted barium
hexaferrites (BaM) prepared via solution combustion method. The structural analysis …

[HTML][HTML] Effect of calcination temperature on Microstructures, magnetic properties, and microwave absorption on BaFe11. 6Mg0. 2Al0. 2O19 synthesized from natural …

M Rianna, T Sembiring, M Situmorang… - Case Studies in Thermal …, 2019 - Elsevier
Abstract The syntheses of BaFe 11.6 Mg 0.2 Al 0.2 O 19 with calcination temperature
variations of 900, 1050, and 1200° C were conducted through a co-precipitation method to …

[HTML][HTML] The effect of Mg–Al binary doped barium hexaferrite for enhanced microwave absorption performance

G Gultom, M Rianna, P Sebayang, M Ginting - Case Studies in Thermal …, 2020 - Elsevier
In this work, binary dopant barium hexaferrite with nominal composition of BaFe 12-2x Mg x
Al x O 19 (x= 0 and 0.1 mol%) have been prepared by co-precipitation method and …

Characterization of natural iron sand from Kata Beach, West Sumatra with high energy milling (Hem)

M Rianna, T Sembiring, M Situmorang, C Kurniawan… - Jurnal …, 2018 - jurnal.usk.ac.id
Iron sand is one of the natural resources in West Sumatra that has not been optimally
utilized. One of the potential locations to get this iron sand deposits is the coast of Kata. This …

Increased Electromagnetic Wave Absorption through Controlled Sonication Processing on BaFe11.2Mg0.4Al0.4O19 Nanoparticles

E Yustanti, A Noviyanto, LC Chotimah, MAR Saputra… - Coatings, 2022 - mdpi.com
Electromagnetic waves show rapid development in electronics, telecommunications, and the
military. One of the efforts to overcome the effects of electromagnetic interference is by …

Judd–Ofelt analysis and photoluminescence properties of europium-activated Y8−xSr2(SiO4)6O2 oxyapatite phosphors

R Gupta, S Agrawal - Journal of Materials Science: Materials in …, 2022 - Springer
In the present study, the solution combustion reaction method was employed to synthesize
the Y8− x Sr2 (SiO4) 6O2: x Eu (YSSO: Eu) oxyapatite phosphors where x= 0.10, 0.15, 0.20 …

[HTML][HTML] Characterization of BaFe12O19/Co3O4 using mechanical alloying approach for microwave absorbing materials

M Rianna, GMPL Batu, L Adhere, T Sembiring… - Case Studies in …, 2024 - Elsevier
In this research, the BaFe 12 O 19/Co 3 O 4 material was carried out using the mechanical
alloying approach with variations in Co 3 O 4 composition of (10, 15, 20) wt%. The …

The effect of Mg-Al substitution, particle size reduction, and thickness of BaFe12-2xMgxAlxO19 samples on increasing electromagnetic wave absorption

E Yustanti, VH Hakimah, A Noviyanto, M Randa… - Materials Today …, 2023 - Elsevier
The synthesis of microwave-absorbing materials through a combined destruction process
using mechanical alloying and ultrasonic vibration is significant due to its practical, waste …

Study and characterization of Fe3O4 synthesized from natural iron sand in Sumatera Utara

M Rianna, M Hamid, F Handayani… - Journal of Aceh …, 2022 - jurnal.usk.ac.id
Pasir besi alam adalah satu dari sumberdaya alam di Indonesia, khususnya Sumatera
Utara, yang pemanfaatannya belum dilakukan secara optimal. Penelitian ini dilakukan untuk …