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All Journal Jurnal Sains dan Teknologi Jurnal Pengkajian dan Pengembangan Teknologi Pertanian Science and Technology Indonesia Communications in Science and Technology Jurnal Pedagogik Olahraga Pena Justisia: Media Komunikasi dan Kajian Hukum MIMBAR : Jurnal Penelitian Sosial Dan Politik Jurnal Ilmiah Manusia dan Kesehatan Media Komunikasi Dunia Ilmu Sipil (MoDuluS) Jurnal Agrisistem: Seri Sosek dan Penyuluhan International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) Jurnal Kolaboratif Sains International Journal of Social Science, Educational, Economics, Agriculture Research, and Technology (IJSET) Rudence: Rural Development for Economic Resilience Jurnal Ilmiah Pendidikan Dasar (JIPDAS) Syarah: Jurnal Hukum Islam dan Ekonomi Jurnal Rumpun Ilmu Kesehatan Jurnal Al Burhan English Education and Applied Linguistics Journal (EEAL Journal) International Journal of Scientific Multidisciplinary Research (IJSMR) Journal of Economics, Management, and Entrepreneurship GEMBIRA (Pengabdian Kepada Masyarakat) FATHIR: Jurnal Studi Islam AT-TAKLIM: Jurnal Pendidikan Multidisiplin Joong-Ki Al-Hayat: Journal of Islamic Education Social Humanity
Ramlan
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Journal : Science and Technology Indonesia

 1 
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 Ade Saptomo Akbar Kurnia Putra Akhmad Aminuddin Bama Alwiyah, Syarifah Andi Umar Annisa Apriyansyah Ardion Arfan Ariel Arjuna Ayu Astasari Ayu Dwi Putri Rusman Bachtiar Simatupang bayu saputra Bernard Sipahutar Budhy Kurniawan Budi Ardianto Devy Nurbayty Dian Safitri Dwi Nanto, Dwi Edy Sudaryanto Eka Patra Elysa, Ratianarimamy Niriko Farisi, Mochammad Ferry Budhi Susetyo Firman Kasbia Fitriani Fitriani Fitriani Umar Fitrizki, St Dewi Nurul Harjoni Harjoni Hasyim Hendrayani, Dhea Henni Kumaladewi Hengky Herry Soebagyo Hesti, Hestiria Anggraeni Hotma Banjarnahor Humaira , Rizka Ida Ayu Putu Sri Widnyani Ilham Bela Perkasa Imam Wahyudi Indrawan, Imam Wahyudi Irfan Hadi Irwan Batubara Isbandi Jaka Permana Jamaliah Jan Setiawan Januar Widakdo Julian, Farhan Kurnia Mulia Ki La Ode Ahmad Akbar La Ode Sasonasis Mahfudz Masno Ginting Michele Aprilia Miftahurrahmah, Mulya Muh. Thamrin Muhammad Adli, Muhammad Muhammad Nur Ali Muhammad Said MUhammad Yusrizal Muliati Muluki Munthe, Abdul Rahman Hidayat Mushaddaq, Reyhan Fikri Nadirah, Ida Naibaho, Marzuki Nehan, Phahul Zhemas Zul Notonegoro, Hamdan Akbar Novianti Novita Nur Asiah Nur Qalbi Nurdin Rahman Nurhikmah Nurjanani Nurlinda Nurqadaria Batjo Pebrianto, Dony Yusra Prabowo Setiyawan, Prabowo Putriyanti, Selvi R, Fitriani Rahayu Repindowaty Harahap Rendi Rohimah, Siti Maryam Ruchjaniningsih RUSMA AYU R Saade, Aminuddin Saade, Faisal Sari, Maili Simbolon, Silviana Siti Hajar Siti Nuraisah Siti Nurkhotijah Sri Juwarni Syarboini Syarifah Rahmah, Syarifah Taufiq Al Farizi Tengku Erwinsyahbana Tihera, Dinda Titik Lestariningsih Triana Novelia Ulmuftia, Nisa Usman Usman Vitayaya, Okvarahireka Wahdania Wardhani, Nia Wisnu Ari Adi Yunasfi