[{"publication":"Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on","type":"journal_article","abstract":[{"text":"(K,Na)NbO3 ceramics have attracted much attention as lead-free piezoelectric materials with high piezoelectric properties. High-quality (K,Na)NbO3 ceramics can be sintered using KNbO3 and NaNbO3 powders synthesized by a hydrothermal method. In this study, to enhance the quality factor of the ceramics, high-power ultrasonic irradiation was employed during the hydrothermal method, which led to a reduction in the particle size of the resultant powders.","lang":"eng"}],"status":"public","_id":"9878","department":[{"_id":"151"}],"user_id":"55222","keyword":["Q-factor","ceramics","crystal growth from solution","particle size","piezoelectric materials","potassium compounds","powders","sintering","sodium compounds","ultrasonic effects","(K0.48Na0.52)NbO3","KNbO3 powders","NaNbO3 powders","high-power ultrasonic irradiation","lead-free piezoelectric materials","lead-free piezoelectric powders","particle size reduction","piezoelectric properties","quality factor","sintered (K0.48Na0.52)NbO3 ceramics","sintering","ultrasonic-assisted hydrothermal method","Acoustics","Ceramics","Lead","Piezoelectric materials","Powders","Radiation effects","Transducers"],"language":[{"iso":"eng"}],"quality_controlled":"1","publication_identifier":{"issn":["0885-3010"]},"issue":"2","year":"2014","page":"225-230","intvolume":"        61","citation":{"ieee":"G. Isobe, T. Maeda, P. Bornmann, T. Hemsel, and T. Morita, “Synthesis of lead-free piezoelectric powders by ultrasonic-assisted hydrothermal method and properties of sintered (K0.48Na0.52)NBO3 ceramics,” <i>Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on</i>, vol. 61, no. 2, pp. 225–230, 2014.","chicago":"Isobe, G., Takafumi Maeda, Peter Bornmann, Tobias Hemsel, and Takeshi Morita. “Synthesis of Lead-Free Piezoelectric Powders by Ultrasonic-Assisted Hydrothermal Method and Properties of Sintered (K0.48Na0.52)NBO3 Ceramics.” <i>Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions On</i> 61, no. 2 (2014): 225–30. <a href=\"https://doi.org/10.1109/TUFFC.2014.6722608\">https://doi.org/10.1109/TUFFC.2014.6722608</a>.","ama":"Isobe G, Maeda T, Bornmann P, Hemsel T, Morita T. Synthesis of lead-free piezoelectric powders by ultrasonic-assisted hydrothermal method and properties of sintered (K0.48Na0.52)NBO3 ceramics. <i>Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on</i>. 2014;61(2):225-230. doi:<a href=\"https://doi.org/10.1109/TUFFC.2014.6722608\">10.1109/TUFFC.2014.6722608</a>","apa":"Isobe, G., Maeda, T., Bornmann, P., Hemsel, T., &#38; Morita, T. (2014). Synthesis of lead-free piezoelectric powders by ultrasonic-assisted hydrothermal method and properties of sintered (K0.48Na0.52)NBO3 ceramics. <i>Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions On</i>, <i>61</i>(2), 225–230. <a href=\"https://doi.org/10.1109/TUFFC.2014.6722608\">https://doi.org/10.1109/TUFFC.2014.6722608</a>","bibtex":"@article{Isobe_Maeda_Bornmann_Hemsel_Morita_2014, title={Synthesis of lead-free piezoelectric powders by ultrasonic-assisted hydrothermal method and properties of sintered (K0.48Na0.52)NBO3 ceramics}, volume={61}, DOI={<a href=\"https://doi.org/10.1109/TUFFC.2014.6722608\">10.1109/TUFFC.2014.6722608</a>}, number={2}, journal={Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on}, author={Isobe, G. and Maeda, Takafumi and Bornmann, Peter and Hemsel, Tobias and Morita, Takeshi}, year={2014}, pages={225–230} }","mla":"Isobe, G., et al. “Synthesis of Lead-Free Piezoelectric Powders by Ultrasonic-Assisted Hydrothermal Method and Properties of Sintered (K0.48Na0.52)NBO3 Ceramics.” <i>Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions On</i>, vol. 61, no. 2, 2014, pp. 225–30, doi:<a href=\"https://doi.org/10.1109/TUFFC.2014.6722608\">10.1109/TUFFC.2014.6722608</a>.","short":"G. Isobe, T. Maeda, P. Bornmann, T. Hemsel, T. Morita, Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions On 61 (2014) 225–230."},"date_updated":"2019-09-16T10:53:17Z","volume":61,"author":[{"first_name":"G.","full_name":"Isobe, G.","last_name":"Isobe"},{"first_name":"Takafumi","full_name":"Maeda, Takafumi","last_name":"Maeda"},{"full_name":"Bornmann, Peter","last_name":"Bornmann","first_name":"Peter"},{"first_name":"Tobias","last_name":"Hemsel","id":"210","full_name":"Hemsel, Tobias"},{"first_name":"Takeshi","full_name":"Morita, Takeshi","last_name":"Morita"}],"date_created":"2019-05-20T13:10:14Z","title":"Synthesis of lead-free piezoelectric powders by ultrasonic-assisted hydrothermal method and properties of sintered (K0.48Na0.52)NBO3 ceramics","doi":"10.1109/TUFFC.2014.6722608"},{"type":"journal_article","publication":"Journal of Korean Physical Society","abstract":[{"text":"The hydrothermal method enables the production of high-quality piezoelectric materials. In this study, we propose to irradiate the reaction solutions with ultrasonic power during the hydrothermal method to obtain a shorter reaction time and a smooth film surface. A high-pressure reaction container for the ultrasonic transducer was newly developed, and the ultrasonically-assisted hydrothermal method was examined by using this container. The effect of ultrasonic assist on the synthesis of lead-zirconate-titanate (PZT) thin films and (K,Na)NbO$_{3}$ powders was verified. Thicker PZT film, thickness around 10 ${\\mu}$m, could be obtained in one process, and (K,Na)NbO$_{3}$ powder was synthesized in half the previous reaction time.","lang":"eng"}],"status":"public","_id":"9743","user_id":"55222","department":[{"_id":"151"}],"keyword":["Hydrothermal method","High-power ultrasonic","PZT thin film","Lead-free piezoelectric materials"],"language":[{"iso":"eng"}],"publication_identifier":{"issn":["1948-5719"]},"quality_controlled":"1","issue":"4","year":"2010","citation":{"bibtex":"@article{Ageba_Kadota_Maeda_Takiguchi_Morita_Ishikawa_Bornmann_Hemsel_2010, title={Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis}, volume={57}, DOI={<a href=\"https://doi.org/10.3938/jkps.57.918\">10.3938/jkps.57.918</a>}, number={4}, journal={Journal of Korean Physical Society}, author={Ageba, Ryo and Kadota, Yoichi and Maeda, Takafumi and Takiguchi, Norihito and Morita, Takeshi and Ishikawa, Mutsuo and Bornmann, Peter and Hemsel, Tobias}, year={2010}, pages={918–923} }","short":"R. Ageba, Y. Kadota, T. Maeda, N. Takiguchi, T. Morita, M. Ishikawa, P. Bornmann, T. Hemsel, Journal of Korean Physical Society 57 (2010) 918–923.","mla":"Ageba, Ryo, et al. “Ultrasonically-Assisted Hydrothermal Method for Ferroelectric Material Synthesis.” <i>Journal of Korean Physical Society</i>, vol. 57, no. 4, 2010, pp. 918–23, doi:<a href=\"https://doi.org/10.3938/jkps.57.918\">10.3938/jkps.57.918</a>.","apa":"Ageba, R., Kadota, Y., Maeda, T., Takiguchi, N., Morita, T., Ishikawa, M., … Hemsel, T. (2010). Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis. <i>Journal of Korean Physical Society</i>, <i>57</i>(4), 918–923. <a href=\"https://doi.org/10.3938/jkps.57.918\">https://doi.org/10.3938/jkps.57.918</a>","ama":"Ageba R, Kadota Y, Maeda T, et al. Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis. <i>Journal of Korean Physical Society</i>. 2010;57(4):918-923. doi:<a href=\"https://doi.org/10.3938/jkps.57.918\">10.3938/jkps.57.918</a>","ieee":"R. Ageba <i>et al.</i>, “Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis,” <i>Journal of Korean Physical Society</i>, vol. 57, no. 4, pp. 918–923, 2010.","chicago":"Ageba, Ryo, Yoichi Kadota, Takafumi Maeda, Norihito Takiguchi, Takeshi Morita, Mutsuo Ishikawa, Peter Bornmann, and Tobias Hemsel. “Ultrasonically-Assisted Hydrothermal Method for Ferroelectric Material Synthesis.” <i>Journal of Korean Physical Society</i> 57, no. 4 (2010): 918–23. <a href=\"https://doi.org/10.3938/jkps.57.918\">https://doi.org/10.3938/jkps.57.918</a>."},"page":"918-923","intvolume":"        57","date_updated":"2022-01-06T07:04:19Z","date_created":"2019-05-13T09:35:33Z","author":[{"first_name":"Ryo","last_name":"Ageba","full_name":"Ageba, Ryo"},{"first_name":"Yoichi","last_name":"Kadota","full_name":"Kadota, Yoichi"},{"full_name":"Maeda, Takafumi","last_name":"Maeda","first_name":"Takafumi"},{"first_name":"Norihito","full_name":"Takiguchi, Norihito","last_name":"Takiguchi"},{"first_name":"Takeshi","last_name":"Morita","full_name":"Morita, Takeshi"},{"full_name":"Ishikawa, Mutsuo","last_name":"Ishikawa","first_name":"Mutsuo"},{"last_name":"Bornmann","full_name":"Bornmann, Peter","first_name":"Peter"},{"full_name":"Hemsel, Tobias","id":"210","last_name":"Hemsel","first_name":"Tobias"}],"volume":57,"title":"Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis","doi":"10.3938/jkps.57.918"}]