CHEN, NICKY (2025) ANALISIS REAKSI SINTERING DAN PERILAKU DENSIFIKASI LANTANUM TITANIUM OKSIDA (La2Ti2O7) UNTUK KERAMIK FUNGSIONAL. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
Lanthanum Titanium Oxide (La₂Ti₂O₇) is a ceramic material that has ferroelectric and piezoelectric properties, and is known for its high thermal stability and resistance to strong electric fields. These properties make it a potential material for hightemperature applications such as sensors, actuators, and advanced electronic devices. This study aims to determine the effect of sintering temperature variations on the crystal structure and morphology of La₂Ti₂O₇ pellets synthesized using a solid-state reaction method. La₂O₃ and TiO₂ powders were manually mixed and compacted into pellets, then sintered at 900°C, 1000°C, 1100°C, and 1200°C for 2 hours. Characterization was carried out using X-Ray Diffraction (XRD) and structure visualization with VESTA software. The results show that at temperatures above 1000°C, the La₂Ti₂O₇ compound successfully forms with a stable monoclinic crystal structure. The density of the pellets increases with increasing temperature, although cracks begin to appear at 1200°C due to internal stress. Meanwhile, at 900°C, the pellets do not form completely and disintegrate into powder because the diffusion process has not taken place effectively. Thus, the sintering temperature plays an important role in determining the crystal phase and physical quality of La₂Ti₂O₇. Keywords: La₂Ti₂O₇, sintering, XRD, monoclinic structure, pellet morphology Lantanum Titanium Oksida (La₂Ti₂O₇) merupakan material keramik yang memiliki sifat feroelektrik dan piezoelektrik, serta dikenal dengan stabilitas termal yang tinggi dan ketahanannya terhadap medan listrik kuat. Sifat-sifat ini menjadikannya material potensial untuk aplikasi suhu tinggi seperti sensor, aktuator, dan perangkat elektronik canggih. Penelitian ini bertujuan untuk mengetahui pengaruh variasi suhu sintering terhadap struktur kristal dan morfologi pelet La₂Ti₂O₇ yang disintesis menggunakan metode reaksi padatan. Serbuk La₂O₃ dan TiO₂ dicampur secara manual dan dikompaksi menjadi bentuk pelet, kemudian disintering pada suhu 900°C, 1000°C, 1100°C, dan 1200°C selama 2 jam. Karakterisasi dilakukan menggunakan X-Ray Diffraction (XRD) dan visualisasi struktur dengan perangkat lunak VESTA. Hasil menunjukkan bahwa pada suhu 1000°C ke atas, senyawa La₂Ti₂O₇ berhasil terbentuk dengan struktur kristal monoklinik yang stabil. Kerapatan pelet meningkat seiring kenaikan suhu, meskipun retakan mulai muncul pada suhu 1200°C akibat tegangan internal. Sementara itu, pada suhu 900°C, pelet tidak terbentuk sempurna dan hancur menjadi serbuk karena proses difusi belum berlangsung efektif. Dengan demikian, suhu sintering berperan penting dalam menentukan fase kristal dan kualitas fisik La₂Ti₂O₇ Kata kunci: La₂Ti₂O₇, sintering, XRD, struktur monoklinik, morfologi pelet
| Item Type: | Thesis (S1) |
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| Call Number CD: | FT/MSN. 25 052 |
| NIM/NIDN Creators: | 41321010006 |
| Uncontrolled Keywords: | La₂Ti₂O₇, sintering, XRD, struktur monoklinik, morfologi pelet |
| Subjects: | 500 Natural Science and Mathematics/Ilmu-ilmu Alam dan Matematika > 530 Physics/Fisika > 537 Electricity/Fisika Listrik 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 621 Applied Physics/Fisika terapan > 621.8 Machine Engineering, Machinery/Teknik Mesin 600 Technology/Teknologi > 690 Buildings/Teknik Bangunan 600 Technology/Teknologi > 690 Buildings/Teknik Bangunan > 691 Building Material/Material Bangunan > 691.4 Ceramic and Clay Material/Keramik dan Bahan Bangunan dari Tanah Liat |
| Divisions: | Fakultas Teknik > Teknik Mesin |
| Depositing User: | khalimah |
| Date Deposited: | 16 Aug 2025 03:18 |
| Last Modified: | 16 Aug 2025 03:18 |
| URI: | http://repository.mercubuana.ac.id/id/eprint/96849 |
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