孙大志   研究员

 

    孙大志研究员,1986年毕业于中国科技大学,获理学学士学位,经推荐进入中国科学院上海硅酸盐研究所读研究生,获工学硕士和博士学位。毕业后在上海硅酸盐所工作,历任助理研究员、副研究员、研究员。其间于1994年公派至澳大利亚悉尼科技大学做访问学者。2002年赴日本国立材料科学研究所做博士后,回国后在上海师范大学任职。是上海市曙光学者,上海市青年科技启明星,上海市浦江人才计划获得者。获“先进青年科技人员”奖(中国科学院上海分院,1995年),“严东生奖”(中科院上海硅酸盐所,2000年);“青年学者”奖(上海师范大学,2004年);

“曙光学者”(上海市教委,2004年)。 

主要研究方向:

    主要涉及铁电材料、压电材料、热释电材料等,研究铁电相变特性、材料老化机理、新型压电材料和高性能热释电材料等。

近几年主要研究课题:

1国家自然科学基金“研究多组元新材料的快速途径”(501720552002-2004)、

2.上海市曙光计划“梯度铁电材料研究”(04SG482005-2007)、

3.上海市浦江人才计划项目“铁电材料的稳定性研究”(05PJ140822005-2007)、

4.上海市光科技攻关项目“用于非制冷焦平面热像仪的高性能热释电陶瓷材料”(015261048

2002-2004)、

5.国家重点军工任务“高性能铁电陶瓷研究”(1997-2001)、

6.中科院基础性研究重大项目“多功能材料的结构设计和制备新途径探索”(其中子课题之

一,KJ951-A1-511,1998-2001)、

7.上海市科技启明星计划“复相陶瓷材料的相变效应研究”(96-QE140291996-1998)、

8.中科院留学回国择优支持基金“复相陶瓷的铁电相变研究”(1995

9.中科院青年基金“铁电陶瓷光致形变效应的机理研究”(1996)。

参加的科研项目主要有:

1.国家自然科学基金重大项目2项:

“精细陶瓷:微观结构、组成和性质”和“弛豫铁电体的单晶化研究”、

2.国家自然科学基金重点项目“铁电陶瓷材料的结构转变和特性研究”

3.国家自然科学基金面上项目“铁电陶瓷热释电效应与微观结构的关系”

4.国家军工任务“提高PZT95/5型相变铁电陶瓷使用性能的研究”等

请、授权专利目录:

1. 孙大志,金雪琴,朱玉丹,朱杰,“温度诱导的可逆相变铁电薄膜”,2006年,200610147796.9

1.     孙大志,朱杰,金雪琴,朱玉丹,“铌镁酸铅-钛酸铅二元系高热释电陶瓷材料及其制备工艺”, 2007年,200710043899.5

3.发明专利, 孙大志, 王永令,林盛卫等, “宽温区相变型热释电陶瓷材料的制备方法”,已授权,ZL 98110900.4,公告号:1202473  (2001)

4.发明专利, 杜辉,钟妮,姚春华,孙大志,瞿翠凤,林盛卫, “富锆 PZT陶瓷的低温烧结”,已公开, 申请号:03116371.8(2003)

发表的论文目录(2002-2007): 

1. D. Z. Sun, X. Ren and K. Ousuka. Stabilization Effect in Ferroelectric Materials during Aging in Ferroelectric State, Appl. Phys. Lett., Vol. 87, (2005)142903

2. Dazhi Sun, Xiaobing Ren, Shiping Yan, Haosu Luo and Kazuhiro Otsuka, Stabilization Effect in BaTiO3 Single Crystal during Aging below Tc, Materials Science Forum, Vol. 475, (2005)1169-1172

3. D.Z.Sun,Y.Y.Zhu,H.Liu,Y.D.Zhu and X.B.Yu,Stabilization Effect in Ferroelectric Lead Lanthnum Titanate Ceramics during Aging in Ferroelectric Phase, Ferroelectrics Letters, Vol.32, (2005)79-84

4. Ni Zhong , Xianlin Dong, Dazhi Sun, Hui Du, Hong Yang, Dielectric properties of Pb(Mg1/3Nb2/3)O3-PbTiO3 Ceramics Modified with WO3, Materials Research Bulletin, Vol.39, No.2, (2004)275-284

5. Ni Zhong, Xianlin Dong, Dazhi Sun, Hui Du, Hong Yang, The Effect of substitute WO3 on Relaxation Behavior of Pb(Mgl/3Nb2/3) 03-PbTiO3 Ceramics, Mater.Sci. Eng. B, Vol. 106, No.3, (2004)263-268

6. Dazhi Sun, Xiaobing Ren and Kazuhiro Otsuka, Temperature dependence of aging effect in ferroelectric and ferroelastic crystals, The 50rd Spring Meeting of the Japan Society of Applied Physics and Related Societies, Yougohama, Japan, March 27-30,(2003)222

7. Dazhi Sun, Xiaobing Ren and Kazuhiro Otsuka, Aging-temperature dependence of stabilization effect in martensite Au-Cd alloy, The 133rd Autumn Meeting of The Japan Institrte of Metals, Sapporo, Japan, Oct. 11-13, (2003)332

8. Dazhi Sun, Xiaobing Ren and Kazuhiro Otsuka, Stabilization of ferroelectric phase in PLZT ceramics during aging in ferroelectric state, The 63rd Autumn Meeting of the Japan Society of Applied Physics, Niikata, Japan, Sept. 24-27, (2003)157

9. H. Du, D. Z. Sun, et al., Study on Modified PZT95/5 Ferroelectric Ceramics, Journal of Inorganic Materials., Vol.18, No.1, (2003)320-324 (in Chinese)

10. Ni Zhong, Dazhi Sun, Hui Du, Hong Yang, Xianlin Dong, Investigation on Pyroelectric Effect of Multi-component PMN-PT Rerroelectric Ceramics, Materials Science Forum, 425,(2003)431-436

11. Ni Zhong, Dazhi Sun,Meiyu Zhao, Xianlin Dong and Hong Yang, Piezoelectric property in the vicinity of morphotropic phase boundary, Electronic Components and Materials, Vol. 22, (2003)1-3

12. Dazhi Sun, Haosu Luo, Meiyu Zhao, Hui Du, Shengwei Lin and Zhiwen Yin, “Property of lead magnesium niobate-lead titanate single crystal near the morphotropic phase boundary”, The 10th International Meeting on Ferroelectrics, Madrid, Spain, Sept. 3-7, (2001)

13. Sun Da-Zhi, “Preparation and Property of PMN-PT Material near the Morphotropic Phase Boundary”, Electronic Components and Materials, Vol.20, No.3, June, (2001)29-30(in Chinese)

14. D. Z. Sun, C. F. Qu, C. H. Yao, H. Du, Q. H. Jin and S. W. Lin, " Relation Between the Phase Transitional Behavior and the Content of Additive Niobium oxide in pzt 97/3", Ferroelectrics, 262, (2001)281-286

15. Sun Da Zhi, Luo Hao SuMeiyu Zhao, Yin Zhi Wen,“Dielectric and piezoelectric properties in PMNT Ceramic material, Journal of Inorganic Materials.Vol. 15, No.5, Oct. (2000)939-942 (in Chinese)

16. D. Z. Sun, H. S. Luo, M. Y. Zhao, H. Q. Xu, S. W. Lin and Z. W. Yin, "Investigation on Inhomogeneity in PMN-PT Material by Nonlinear Pyroelectric Effect", Ferroelectrics Letters, Vol.27, No.3, (2000)59-63

17. Du JinSun Da Zhi and Lin Sheng Wei,“Quantitative Calculation of Spontaneous Polarization during the FRL - FRH Transition of PZT ceramics”, Journal of Inorganic Materials.Vol. 15, No.6, Dec. (2000)1021-1024  (in Chinese)

18. D. Z. Sun, R. B. Liu and S. W. Lin, “ The FRL-FRH Phase Transition in PZT 95/5 Thin Film”,  Ferroelectrics Letters, Vol.24,(1998)87-82

19. N. DUAN, D. Z. SUN, X. L. DONG et al, “Investigation on the FRL-FRH  Pyroelectric Phase Transition Behavior of PZT Multi-composition Ferroelectric Ceramics”,Journal of the Korean Physical Society, Vol. 32, February (1998)S1176-1178

20. D. Z. SUN and S. W. LING, “Relationship Between the Pyroelectric Effect in Ferroelectric Ceramics and Their Structural Parameters”,Journal of the Korean Physical Society, Vol. 32, February (1998)S205-207

21. Sun DazhiYu Daweiet al.“Nonlinear Pyroelectric Effect in Composite Ceramic material”,Journal of Functional Materials and DevicesVol. 3, No.4, Dec. (1997)105-110 (in Chinese)

22. Sun DazhiQu Cuifeng, et al.“Relationship Between the Pyroelectric Effect in PT, PZT Ceramics and Their Structural Parameters”, Journal of Inorganic materials, Vol.12, No.5, Oct., (1997)715-720  (in Chinese)

23. Sun DazhiLin Shenweiet al.“Study on FRL-FRH Phase Transition in Composite Ceramic Material”,Journal of Inorganic materials,   Vol.12, No.3,  Jun., (1997)397-401  (in Chinese)

24. Sun DazhiLin Shenweiet al.“Study on the Pyroelectric Effect of Lead Titanate and Lead Zirconate Titanate Thin Film”,  Journal of Inorganic materials, Vol.11,  No.3  Sept.,  (1996)505-510  (in (Chinese)

25. X. L. DONG, D. W. YU, H. T. CHEN, N. DUAN,D. Z. SUN, et al, “Preparation and FR(LT)-FR(HT) Phase Transition Behavior of Multicomposition PZT Composites”, Ferroelectrics, Vol.189,  (1996)47-52

26. Dong Xianling, Sun Da ZhiWang Yong Ling“The studies on Piezoelectric Anisotropies of PZT-based Ceramics Near Ferroelectric-Antiferroelectric Phase Boundary”, Journal of Inorganic materials, 10, (1995) PP.193-198. (in Chinese)

27. D. Z. SUN, X. L. DONG AND Y. L. WANG, “Electromechanical Coupling in PHZT and PLZT Ceramic Materials Near F-AF Phase Boundary”,     Ferroelectrics,  Vol. 173, (1995)PP279-282

28. Sun Da ZhiLin Shen WeiWang Yong Ling"Pyroelectric Ceramic Materials with Multi-composition", Journal of Inorganic materials, 10(1), March , (1995) PP.117-119  (in Chinese)

29. D. Z. SUN, X. L. DONG AND Y. L. WANG, “Temperature Dependence of Kt in Piezoelectric Ceramics Near F-AF Phase Boundary”, Ferroelectrics Letters, 15, (1993) PP.121-126

30. D. Z. SUN,  X. L. DONG  AND  Y. L. WANG,      “Progress  in  Study  on  New  Piezoelectric Ceramics with High Kt”,   Ferroelectrics, 127, (1992) PP.125-130.

31. Y. L. WANG, D. Z. SUN, H. T. CHEN, “Recent Developments in Functional Ceramics in China”, British Ceramic Transactions and Journal, 91, (1992) PP.58-62

32. Y. L. WANG, X. H. DAI, D. Z. SUN, “New Piezoelectric ceramics with High Coupling Factor Kt”, Proceedings of 7th ISAF’90, PP.22-23

33. Y. L. WANG, X. H. DAI, D. Z. SUN, “The Applications of PZT 95/5 Ceramics by Induced Phase Transformation”, Proceedings of 7th ISAF’90, PP.513-516

34. D. Z. SUN, Y. L. WANG, “Calculation of Ferroelectric- Antiferroelectric Phase   Boundary of PSZT”, Ferroelectrics, 101, (1990) PP.273-279 

主要成果介绍:

1.   率先发现了铁电材料的稳定化效应,关于形状记忆合金中点缺陷分布的对称性假说(Nature389,(1997)579)在铁电体中亦是影响材料物理性能的重要机制,进而对铁电材料中一系列尚未完全理解的时效现象提出了合理解释;

2.   通过对铁电相变材料的系统研究, FRL-FRH铁电相变过程中的自发极化的变化规律进行了计算机模拟,在一定程度上揭示了自发极化的变化规律,并且有助于新材料的设计;根据相变过程中自发极化的变化规律,确定了复相材料的化学组成,设计了复相材料的结构,制备了具有复相结构的铁电陶瓷。尤为关键的是:建立了一种简单新颖的工艺方法,可以制备宽温区的具有高热释电系数的材料,可望大幅度提高红外探测器的探测率,具有重要实用价值;

3.   研究热压烧结工艺制备热释电陶瓷材料,提高了材料的致密度、机械强度及热释电性能,满足了用户要求,适应了市场需要;

4.   从宏观唯象论出发,PSZT系统铁电-反铁电相变材料的温度-组成相图进行了理论计算,为铁电相变材料的制备和对相变性质的进一步深入研究建立了定量分析的基础;在相关系统中发现了机电藕合各向异性的现象,预测在其它系统中的系统铁电-反铁电相变材料也应具有同样特性,并已在PZTPLZTPHZT系统中证实了这一点。研究了温度对铁电相变材料的机电藕合性质的影响,从更为全面的角度证实了相界在其中所起的作用,丰富了压电学的研究内容,为高性能压电材料的研制提供了新的可能;

5.   研究了铁电相变材料的相变形变效应以及相界反铁电-铁电相变诱导电场和相变形变的影响,为智能材料和智能系统的研究进行了材料的准备;

6. 探索了一条利用化学组成的梯度分布快速遴选性能优异的新材料的有效途径,这在多组元的功能材料研究中对于加快新材料的开发利用具有重要意义。

 

 

 

 

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