Pengaruh Dopan Zn pada Keramik MgTio3 terhadap Peningkatan Parameter Kisi dan Volume Sel Satuan

renitafitriani-13; Frida Ulfah Ermawati

doi:10.26740/ifi.v15n2.p192-198

Authors

renitafitriani-13 Universitas Negeri Surabaya
Frida Ulfah Ermawati Universitas Negeri Surabaya

DOI:

https://doi.org/10.26740/ifi.v15n2.p192-198

Keywords:

keramik MZT0 dan MZT02, XRD, parameter kisi, volume sel satuan, MZT0 and MZT02 ceramics, phase transformation, lattice parameter, unit cell volume

Abstract

Abstrak

Material keramik dielektrik merupakan material yang menarik perhatian dalam pengembangan resonator dielektrik gelombang mikro, dan teknologi nirkabel modern. Magnesium Titanate (MgTiO₃) menjadi satu di antara komponen yang dapat dimanfaatkan dalam aplikasi tersebut. Sifat asli keramik delektrik MgTiO₃dapat dibuat lebih baik dengan menambahkan ion dopan. Terkait hal tersebut, makalah ini melaporkan karakterisasi struktur keramik dengan komposisi baru, yakni 20% mol dopan Zn pada (Mg_0,8Zn_0,2)TiO₃ (MZT02) melalui data XRD. Dopan Zn ditambahkan untuk mengetahui perubahan ukuran parameter kisi dan vol. sel satuan dibandingkan dengan tanpa diberi dopan. Data struktur MZT02 dibandingkan dengan data struktur MgTiO₃ tanpa dopan (MZT0). Serbuk MZT0 dan MZT02 disintesis melalui metode pencampuran larutan sesuai stoikiometri, dengan bahan awal serbuk logam Mg, Ti, dan Zn serta HCl 12 M. Serbuk amorf MZT0 dikalsinasi pada 700 °C, sedangkan MZT02 pada 500 °C masing-masing selama 5 jam. Serbuk kristalin dikompaksi menggunakan hidrolik hand press (8 MPa, 10 detik) menjadi pelet silinder pejal berdiameter 8 mm dan disinter pada 1100 °C selama 4 jam. Hasil XRD diperoleh parameter kisi c pada fasa utama MgTiO₃ meningkat dari 13,903 10^-2 nm (MZT0) menjadi 13,910 10^-2 nm (MZT02). Peningkatan juga terlihat pada data volume sel satuan, yakni dari 307.71 ± 0.020 10^-1 nm³(MZT0) menjadi 307.81 ± 0.042 10^-1 nm³(MZT02). Peningkatan parameter kisi dan volume sel satuan disebabkan ukuran jari-jari Zn (0,074 nm) yang lebih besar dibandingkan dengan ukuran jari-jari Mg (0,072 nm). Distorsi kisi tersebut juga menyebabkan menurunnya nilai konstanta dielektrik () dan faktor Q pada keramik MZT02.

Abstract

Dielectric ceramic materials are essential for the development of microwave dielectric resonators and modern wireless technology. Magnesium Titanate (MgTiO₃) is one of the components used in that application. Original properties of MgTiO₃dielectric ceramics can be improved by added dopant ions. Therefore, this paper reports the structural characterization of (Mg_0,8Zn_0,2)TiO₃ (MZT02) with 20 mol% Zn dopant via XRD. Structural data of MZT02 are compared with structural data of MgTiO₃without dopants (MZT0). Zn dopants added to determine the changes size of lattice parameters and volume of unit cell compared to without dopant. MZT0 and MZT02 powders were synthesized using stoichiometric solution mixing method, with Mg, Ti, and Zn metal powders and 12 M HCl as starting materials. Amorphous MZT0 powder was calcined at 700 °C, while MZT02 at 500 °C for 5 hours each. crystalline powder compacted using hydraulic-hand-press (8 MPa, 10 seconds) into solid cylindrical pellets with diameter 8 mm and sintered at 1100 °C for 4 hours. XRD results obtained that lattice parameter c of the main phase MgTiO₃ increased from 13,903 10^-2 nm (MZT0) to 13,910 10^-2 nm (MZT02). Consequently, the unit cell volume increased from 307.71 ± 0.020 10^-1 nm³(MZT0) to 307.81 ± 0.042 10^-1 nm³ (MZT02). Increase in the lattice parameter and unit cell volume was due to the larger radius of Zn (0.074 nm) compared to radius of Mg (0.072 nm). Distortion of the lattice also causes a decrease the dielectric constant () and Q factor in MZT02 ceramics.

Downloads

Download data is not yet available.

References

[1] Z. Fu, C. Chen, Y. She, Z. Yang, and C. Li, “A/B Site Modified MgTiO3 Dielectric Ceramics for Microwave Application,” Integr. Ferroelectr., vol. 230, no. 1, pp. 78–84, Nov. 2022, doi: 10.1080/10584587.2022.2102800.

[2] T. Shi et al., “Fabrication, sinterability and microwave dielectric properties of MgTiO3−(Ca0.8Sr0.2)TiO3 composite ceramics from nanosized powders,” Vacuum, vol. 201, p. 111107, 2022, doi: https://doi.org/10.1016/j.vacuum.2022.111107.

[3] A. Y. Hercuadi, Y. Sulaeman, and P. Adhi, “Dielectric resonance oscillator (DRO) 9.6 GHz for RADAR application,” in Proceedings of the 2015 IEEE 4th Asia-Pacific Conference on Antennas and Propagation, APCAP 2015, 2016, pp. 549–551. doi: 10.1109/APCAP.2015.7374483.

[4] Mursal, Azmi, N., & Ismail, I. (2021). Pengaruh Penambahan CO-Doping Mg/La terhadap Karakterisasi TiO2 sebagai Fotoelektroda. Jurnal Teori Dan Aplikasi Fisika, 9(1), 79–86. https://doi.org/10.23960/jtaf.v9i1.2633.

[5] Ermawati, Frida U. (2019). Struktur Kristal Bahan Keramik. Unesa University Press. ISBN: 978-602-449-375-2.

[6] Kuganathan, N., Iyngaran, P., Vovk, R., & Chroneos, A. (2019). Defects, dopants and Mg diffusion in MgTiO3. Scientific Reports, 9(1), 1–10. https://doi.org/10.1038/s41598-019-40878-y.

[7] Ermawati, Frida U., Taryana, Y., Sulaeman, Y., Wijayanto, Y. N., Sudrajat, N., & Adi, W. A. (2023). Fabrication and characterization of (Mg0.8Zn0.2)(Ti0.99Sn0.01)O3 ceramics as a 4.0 GHz resonator in dielectric resonator oscillator module. Journal of Materials Science: Materials in Electronics, 34(20), 1–18. https://doi.org/10.1007/s10854-023-10890-0.

[8] Z. Gong, Z. Wang, L. Wang, Z. Fu, W. Han, and Q. Zhang, “Microwave dielectric properties of high-Q Mg(SnxTi1-x)O3 ceramics,” Electron. Mater. Lett., vol. 9, no. 3, pp. 331–335, 2013, doi: 10.1007/s13391-0132214-3.

[9] Angela, R. dan Pratapa, S. (2012) “Sintesis MgTiO3 dengan Variasi Temperatur Kalsinasi menggunakan Metode Pencampuran Larutan,” Jurnal Sains Dan Seni Its, 1(1), hal. 73–75.

[10] Ermawati, F. U., & Suasmoro, S. (2018). Dilatometric shrinkage study on magnesium titanate-based ceramic systems. Journal of Physics: Conference Series, 997(1). https://doi.org/10.1088/1742-6596/997/1/012005.

[11] Voshage, M., Megahed, S., Schückler, P. G., Wen, P., Qin, Y., Jauer, L., Poprawe, R., & Schleifenbaum, J. H. (2022). Additive manufacturing of biodegradable Zn-xMg alloys: Effect of Mg content on manufacturability, microstructure and mechanical properties. Materials Today Communications, 32(January). https://doi.org/10.1016/j.mtcomm.2022.103805.

[12] M. D. Z. Abror dan F. U. Ermawati, “Analisis Rietveld Pola XRD Serbuk Mg(Ti0,98Sn0,02)O3 Hasil Sintesis dengan Metode Pencampuran Larutan,” J. Inov. Fis. Indones., vol. 12, no. 3, pp. 26–34, 2023.

[13] P. Gogoi, L. R. Singh, dan D. Pamu, “Characterization of Zn Doped MgTiO3 Ceramics: an Approach for RF Capacitor Applications,” J. Mater. Sci. Mater. Electron., vol. 28, no. 16, pp. 11712–11721, 2017, doi: 10.1007/s10854-017-69 V. V. Kulyk et al., “The effect of Sintering Modes on The crystal Lattice

[14] V. V Kulyk, Z. A. Duriagina, B. D. Vasyliv, P. Y. Lyutyy, and P. Klimczyk, “The effect of sintering modes on the crystal lattice Parameters and The morphology of the ZrO2–nY2O3 (n = 3–8 mol%) Ceramic Microstructure Components,” Archives of Materials Science and Engineering, vol. 128, no. 1, pp. 5–22, Jul. 2024, doi: 10.5604/01.3001.0054.8015.75-6.

[15] Chen, Yuan-Bin & Tseng, Zong-Liang & Chen, Lung-Chien & Lin, Chien-Chi & Miao, Hsin-Yuan & Liu, Jih-Hsin & Lin, Shih-Hung. (2018). Crystal Structure and Microwave Dielectric Properties of [(Mg0.6Zn0.4)0.95Co0.05]2TiO4-modified Ca0.6La0.8/3TiO3 cordierite ceramics with a near-zero temperature coefficient. Journal of Materials Science: Materials in Electronics. 29. 10.1007/s10854-018-9137-6.

[16] C. Lin et al., “Effect of dopant-induced local vibration modes on pressure-driven structural phase transition in Mn and Co-doped ZnO,” ISCIENCE, vol. 28, no. 6, p. 112560, 2025, doi: 10.1016/j.isci.2025.112560.