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All Journal Telaah Science and Technology Indonesia Jurnal Penelitian Sains Teknologi Indonesia Indonesian Physical Review Journal of Technomaterial Physics International Journal of Social Service and Research
Masno Ginting
Lembaga Ilmu Pengetahuan Indonesia (LIPI)
Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Social Sciences

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Journal : Science and Technology Indonesia

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Analysis of Structure, Morphology, Magnetic Properties, and Microwave Absorption of Lanthanum Orthoferrite (LaFeO3) Naibaho, Marzuki; Widakdo, Januar; Kurniawan, Budhy; Nehan, Phahul Zhemas Zul; Vitayaya, Okvarahireka; Novita; Ramlan; Adi, Wisnu Ari; Ginting, Masno
Science and Technology Indonesia Vol. 9 No. 4 (2024): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.4.851-856

Abstract

LaFeO3 has been prepared using the solid-state reaction method with High Energy Milling (HEM). The preparation of LaFeO3 was carried out using stoichiometric calculations. Based on the XRD measurement results, single-phase LaFeO3 with an orthorhombic crystal structure was obtained. From the SEM results, the morphology of LaFeO3 is uniform, and the EDS results show the weight percentage of La, Fe, and O elements are 49.74, 21.08, and 29.18 wt%, respectively. VSM LaFeO3 results show magnetic saturation, remanence, and coercivity are 0.24 emu/g, 0.02 emu/g, and 853.38 Oe, respectively, and the absorption of LaFeO3 is -7.40 dB at a frequency of 6.02 GHz with a LaFeO3 sample thickness of 1.5mm.
Tuning Magnetic Behavior of La₁₋ₓSrₓFeO₃ (x = 0.1–0.5) via Sr Doping: From Antiferromagnetism to Ferromagnetism Ramlan; Naibaho, Marzuki; Ginting, Masno
Science and Technology Indonesia Vol. 11 No. 2 (2026): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2026.11.2.515-523

Abstract

Strontium-substituted LaFeO₃ compounds with the chemical formula La₁₋ₓSrₓFeO₃ (x = 0.1–0.5) were successfully prepared via the solid-state reaction technique by partially replacing La at the A-site. Structural analysis was carried out using X-ray diffraction (XRD), while surface morphology and elemental composition were investigated by scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM–EDS). The magnetic behavior of the samples was evaluated using a vibrating sample magnetometer (VSM). XRD patterns confirmed that all synthesized compositions crystallized in a single-phase LaFeO₃ structure without detectable impurity phases. The dominant diffraction peak corresponded to the (121) crystallographic plane, indicating an orthorhombic structure with the Pnma space group (No. 62). SEM observations revealed irregular particle morphologies with a broad particle size distribution. EDS analysis verified the successful incorporation of Sr into the LaFeO₃ lattice, as evidenced by the presence of La, Fe, O, and Sr elements in all doped compositions (x = 0.1–0.5). Magnetic measurements showed that the La₀.₉Sr₀.₁FeO₃ sample exhibited the best magnetic performance, with a saturation magnetization (Mₛ) of 0.393 T and a coercive field (Hc) of 2661 Oe. The introduction of Sr induced a transition in magnetic behavior from antiferromagnetic to ferromagnetic ordering. Overall, these results demonstrate that La₁₋ₓSrₓFeO₃ materials are promising candidates for electromagnetic wave absorption applications.
Co-Authors Andrameda, Yurian A Angelo, Marc Antonio Anggito Pringgo Tetuko Ayu Yuswita Sari Budhy Kurniawan Candra Kurniawan Duma, Tulus Na Fachredzy, Amdy Fresky Agung Prasetya, Fresky Agung G. Gunawan, G. Ginting, Riski Titian Henry, - Hia, Taufik Hidayat Ichsan, Novita Januar Widakdo Juliyana, Ujang T Lukman Faris Nurdiyansyah, Lukman Faris Masbah Rotuante Tagore Siregar, Masbah Rotuante Tagore Maulidita, Maulidita Melinia, Luh Ayu N, Nasruddin M N, Nasrudin M Naibaho, Marzuki Nehan, Phahul Zhemas Zul Novita Perdamean Sebayang Purwanto, Budi A Puspita, Endah Ramlan Ramlan, H. Sebayang, P. Setiadi, Eko A sihotang, muhammad sontang Siregar, Elfrida Soerya, Balada Syahrul Humaidi, Syahrul Tarigan, Kontan Vitayaya, Okvarahireka Wisnu Ari Adi