余建定 研究员  无容器技术与新材料研究   021-5241-2507  yujianding@mail.sic.ac.cn

　　教育经历： 
　　1975-1978，上海交通大学，金属材料
　　1991-1993，东京工业大学，材料科学 硕士学位（M.E.）
　　1993-1996，东京工业大学，材料科学 博士学位（Ph.D） 

　　工作经历： 
　　1978-1988，上海航空工业学校，讲师 
　　1996-1997，日本新能源及产业技术开发机构，研究员
　　1997-1999，日本宇宙开发事业团，研究员
　　1999-2003，日本千叶工业大学，副教授
　　2007-2012，日本宇宙航空研究开发机构，主干研究员
　　2012-至今，中科院上海硅酸盐研究所，高性能陶瓷和超微结构国家重点实验室，研究员 

　　科研工作简介： 

　　在空间微重力条件下利用静电悬浮进行的无容器凝固实验，开发出粒子均匀分布的兼具铁电性和磁性的纳米BiFeO₃功能材料，为制备具有新型铁电-铁磁耦合效应的纳米材料开辟了新的途径。（图1） 

　　
Fig. 1 BiFeO₃ solidified with containerless processing in microgravity and its microstructure 

　　利用无容器技术制备成功的六方体BaTiO₃晶体，在室温中期介电常数高达10万以上。比现在电子产业中广泛使用的BaTiO₃的最高介电常数高十倍，使同样容量的电容器体积可减小十倍，作为下一代超小型大容量积层电容的最有潜力的材料之一。（图2）  

　　
 Fig.2 Hexagonal-BaTiO₃ crystal grown with containerless processing and its giant dielectric properties  

　　利用无容器技术制备成功的新型结构的BaTi₂O₅玻璃体系，具有和钻石相匹配的高折射率（2.4）。可替代钻石制成DVD读写装置用固体浸没透镜，使蓝光DVD光盘的单层播放容量由目前的25GB提升到200GB以上。（图3） 

　　
Fig. 3 BaTi₂O₃ glasses fabricated with containerless processing and its refractive index higher as diamond(n=2.4) 

　　开发研制成功了高速精确位置控制及激光器的多方位聚焦加热静电悬浮装置，解决熔点高达3000°C以上的金属、非金属无机化合物的快速安定融化悬浮的技术难题。为测试高温难融合金和化合物的相变过程和热物性奠定基础。（图4） 

　　Fig. 4 Ta was melted with containerless processing using electrostatic levitation furnace 

　　科研成果： 

1. Atsunobu Masuno; Chikako Moriyoshi; Teruyasu Mizoguchi; Toshihiro Okajima; Yoshihiro Kuroiwa; Yasutomo Arai; Jianding Yu; Hiroyuki Inoue; Yasuhiro Watanabe “Stabilization of metastable ferroelectric Ba1-xCaxTi2O5 by breaking Ca-site selectivity via crystallization from glass” Scientific Reports ,10/22/, pp.1-6,2013 
2. Jiao Duan , Yan Liu , Xiuhong Pan , Yubo Zhang , Jianding Yu , Kiyotaka Nakajim , Hiroki Taniguchi “High photodegradation efficiency of Rhodamine B catalyzed by bismuth silicate nanoparticle” Catal.Commun. , vol. 39, pp. 65–69,2013 
3. Zhang Minghui, Yu Jianding, Pan Xiuhong, Cheng Yuxing, Liu Yan, “Increase of the blue upconversion emission in Tm3+/Yb3+ co-doped titanate glass–ceramics” Journal of Inorganic Materials,vol. 28, pp. 896-900,2013 
4. Yu Xing Cheng, Gui Sheng Xu, Jian Ding Yu, Xiu Hong Pan, Ming Hui Zhang, Yan Liu “Thermal and Optical Properties of High Refractive Index xNb2O5-(1-x)La2O3 Glasses Prepared by Aerodynamic Levitation Method” Materials Science Forum，vol. 749, pp. 255-259,2013 
5. 张龙； 张曙光； 余建定； 李建国 “气动悬浮冷速控制及Al-7.7Ca共晶合金的凝固组织” 金属学报vol.49(4), pp. 451-456 ,2013 
6. C. Wu, M. Zhang, D. Zhai, J. Yu, Yan Liu, Huiying Zhu, Jiang Chang. “Containerless processing for preparation of akermanite bioceramic spheres with homogenous structure, tailored bioactivity and degradation” J. Mater. Chem. B., pp.1019-1026, 2013 
7. Y. Chen, G. Xu, J. Yu, X. Pan, M. Zhange and Y. Liu “Thermal and Optical Properties of High Refractive Index xNb₂O₅-(1-x)La₂O₃ Glasses Prepared by Aerodynamic Levitation Method” Materials Science Forum 749,pp 255-259, (2013) 
8. S. Yoda, J. Yu, M.V. Kumar, “Nano-structure formation of an oxide ceramics with unprecedented magnetization by supercooling”, Appl. Phys. Lett. 100, pp102902-05, 2012 
9. M. V. Kumar, K. Kuribayashi, K. Nagashio, T. Ishikawa, J. Okada1, J. Yu, S. Yoda, and Y. Katayama  “Real-time x-ray diffraction of metastable phases during solidification from the undercooled LuFeO3 melt by two-dimensional detector at 1 kHz” Appl. Phys. Lett. 100,pp 191905-08, 2012 
10. M. V.  Kumar1,K. Kuribayashi, J. Yu, J.T. Okada, T. Ishikawa “Microstructure and Magnetic Properties of Metastable RFeO₃(R:Rare-earth element) Formed from Undercooled Melt” J. Amer. Cera. Soc. 96, pp995-1002,2013 
11. A. Masuno, Y. Watanabe, H. Inoue1, Y.Arai, J. Yu, and M. Kaneko “Glass-forming region and high refractive index of TiO2-based glasses prepared by containerless processing Phys”. Status Solidi C 9, No. 12,pp 2424–2427, 2012  
12. M. Zhang, Y. Liu, J. Yu, X. Pan, S. Yoda“A novel upconversion Ta₂-La₂O₃-Ta₂O₅ bulk glass co-doped with Er³⁺/Yb³⁺ fabricated by contanerless processing” Materials Letters,66, pp367-369,2012 
13. X. H. Pan, J. Yu, Y. Liu, S. Yoda, M. H. Zhang, F. Ai, F. Jin,H. M. Yu, and W. Q. Jin, “Infrared to visible upconversion luminescence in Er³⁺/Yb³⁺ doped titanate glass prepared by containerless processing”, Journal of Luminescence, 132, pp1025-1029, 2012. 
14. M. Kaneko, J. Yu, A. Masuno, H. Inoue, M.V. Kumar, O. Odawara, S. Yoda, “Glass Formation in LaO_3/2-TiO₂ Binary System by Containerless Processing”, J. Amer. Cera. Soc. 95 (1), 79-81, 2012. 
15. A. Masuno, Y. Kikuchi,  H. Inoue, J. Yu, Y. Arai, “Giant Second Harmonic Generation from Metastable BaTi2O5” Applied Physics Express, V 4, 4, pp042601--3 , 2011. 
16. X. H. Pan, J. Yu, Y. Liu, M. H. Zhang, “Upconversion fluorescence in Nd³⁺/Yb³⁺ co-doped titanate glasses prepared by containerless method”, J. Materials Research, 26, pp2907-2911 2011. 
17. X. H. Pan, W. Q. Jin, Y. Liu, F. Ai, F. Jin and J. J. Xie, “Optical and atomic force microscopic study on step bunching in BaB2O4 crystal growth”, Chinese Physics B, 20, pp028102-5,2011. 
18. X. H. Pan, J. Yu, Y. Liu, S. Yoda, H. M. Yu, M. H. Zhang, F. Ai, F. Jin and W. Q. Jin, “Thermal, mechanical, and upconversion properties of Er3+/Yb3+ co-doped titanate glass prepared by levitation method”, Journal of Alloys and Compounds, 509, pp7504-7507 ,2011. 
19. W. Wen, F. Miyamaru, M. W. Takeda, J. Yu and P. Sheng “Single-phase electrorheological effect in microgravity”, Soft Matter,pp 7198-7200, 2011. 
20. H. Natsui, C.Moriyoshi, F. Yoshida, Y. Kuroiwa, T. Ishii, O. O Odawara, J. Yu, and S. Yoda, “Nanosized hexagonal Mn- and Ga-doped BaTiO₃ with reduced structural phase transition temperature”, Appl. Phys. Lett. 98, pp132909-11,2011.  
21. Moriyoshi Chikako; Miyoshi Satoru; Kuroiwa, Yoshihiro; Yu Jianding;, Arai Yasutomo, Masuno Atsunobu; “Charge Density Study of Metastable State in BaTi2O5 with Fivefold Coordinated Ti” Japanese Journal of Applied Physics, V 49, 9, pp. 09ME10-01-04 ,2010. 
22.  J. Yu, S. Yoda, A. Masuno, H. Natsui, M. Kaneko “Structure of Glassy and Metastable Crystalline BaTi2O5 Fabricated Using Containerless Processing” Ferroelectrics, 402, pp130-136 ,2010. 
23. HIDESADA NATSUI, JIANDING YU, SATOSHI. HASHIMOTO, MITSURU ITOH, OSAMU ODAWARA, Diffusion Behavior of Oxygen in the Hexagonal BaTiO₃ Single Crystal Grown by FZ Method. Ferroelectrics, 403, pp225-229,2010 
24. J. Yu, S. Kohara, S. Nozawa, K. Itoh, S. Miyoshi, Y. Arai, A. Masuno, H. Taniguchi, M. Itoh, M. Takata, T. Fukunaga, S. Koshihara, Y. Kuroiwa, and S. Yoda, “Comprehensive Structural Study of Glassy and Metastable Crystalline BaTi₂O₅”, Chem. Mater. 21, pp259-263 ,2009. 
25.  J. Li, T. Ishikawa, J. T. Okada, Y. Watanabe, J. Yu, S. Yoda, Z. Yuan. “Noncontact thermophysical property measurement of liquid cerium by electrostatic” Journal of Materials Research, 24 (7) pp2449-2452, 2009 

　　专利：

1. 余建定. 無容器凝固法によるBaTiO3系セラミックス材料の製造方法，2007.4.13，日本，3941871 
2. 余建定：無容器凝固法によるバリウムチタン酸化物単結晶材料片の製造方法， 2007.9.21，日本，4013226 
3. 余建定：無容器凝固法によるバリウムチタン酸化物単結晶材料片の製造方法，2009.6.9，美国，US7,544,245 B2 
4. 余建定：無容器凝固法によるバリウムチタン系酸化物ガラスの製造方法，2011.7.29，日本，4789086 
5. 余建定：無容器凝固法によるバリウムチタン系酸化物ガラスの製造方法，2011.10.4，美国，US8,028,541 B2 
6. 余建定：チタン系酸化物ガラスおよびその製造方法，2012.3.23，日本，4953234 
7. 余建定：チタン系酸化物ガラスおよびその製造方法，2012.3.23，日本，4953234 
8. 余建定. 誘電体磁器組成物，2012.12.21，韩国，10-1216702 
9. 余建定. 誘電体磁器組成物，2012.10.23，美国，US8,293,668 B2