Introduction to the group




Dr. Xiaolong Chen, Professor and Director, Group leader

Dr. Xiaolong Chen is a Professor and Director of Research & Development Center for Functional Crystals at the Institute of Physics, Chinese Academy of Sciences (IOP, CAS). He received his Ph.D. in condensed matter physics in 1991 from IOP and then worked at IOP. He did research as Alexander von Humboldt Research Fellow in Heidelberg University and University of Bayreuth, Germany from 1995 through 1997. Dr. Chen rose the academic ranks to Professor of condensed matter physics in 1997. He won the support of the National Outstanding Youth Science Foundation in 1999, and was supported by Hundred Person Project of CAS in 2003. He has received the Invention Venture Grand Prize in 2009. Dr. Chen is a Fellow of the International Centre for Diffraction Data (ICDD) and an Editor for the Powder Diffraction. He is also the executive council vice-president of Chinese Crystallographic Society and technical regional co-chair of ICDD in China.
Dr. Chen has made innovative contributions to the growth, characterization and understanding of wide band-gap semiconductors, as well as exploration of new functional crystal materials. He redesigned the growth apparatus and settled the scientific and technological key issues for SiC single crystal growth and processing. Considerable progress have been made in source materials, seeding technology, process control, and doping, resulting in the first spring-off (TankeBlue) in China that is devoted to mass produce quality 2-4 inch 4H-SiC and 6H-SiC wafers. By now, Tankeblue has been already one of the major suppliers of SiC wafers in the world. He found many new functional crystal materials through phase relation study combing with powder or single crystal X-ray diffraction structural analyses. Among them, KFe2Se2 is a new FeSe-layer compound with superconductivity at about 30 K. Its underlying mechanism is different from those of FeAs-based superconductors, which inspires worldwide interests. YBa3B9O18 is found to be a potential scintillation material. Dr. Chen holds 16 patents and has authored and co-authored over 300 peer-reviewed journal articles which have been cited more than 2500 times.

Research Interests


1. Growth of wide band-gap semiconductors

2. New functional materials exploration and structural analysis

3. Studies on physical properties of doped wide band-gap semiconductors

4. Study of graphene grown on SiC and exploration of its potential applications


Selected Publications


Defect-Induced Magnetism in Neutron Irradiated 6H-SiC Single Crystals
Y. Liu, G. Wang, S. C. Wang, J. H. Yang, L. Chen, X. B. Qin, B. Song, B. Y. Wang, X. L. Chen
Phys. Rev. Lett.
106 (2011) 087205

Superconductivity in the iron selenide KxFe2Se2 (0≤x≤1.0)
J. G. Guo, S. F. Jin, G. Wang, S. C. Wang, K. X. Zhu, T. T. Zhou, M. He, X. L. Chen
Phys. Rev. B 82 (2010) 180520(R)

Stable Oxoborate with Edge-Sharing BO4 Tetrahedra Synthesized under Ambient Pressure
S. F. Jin, G. M. Cai, W. Y. Wang, M. He, S. C. Wang, X. L. Chen
Angew. Chem. Int. Ed. 49 (2010) 4967-4970

Experimental Observation of Defect-Induced intrinsic Ferromagnetism in III-V Nitrides: The Case of BN
B. Song, J. C. Han, J. K. Jian, H. Li, Y.C. Wang, H. Q. Bao, W. Y. Wang, H. B. Zuo, X. H. Zhang, S. H. Meng, X. L. Chen
Phys. Rev. B 80 (2009) 153203

Observation of Glassy Ferromagnetism in Al-Doped 4H-SiC
B. Song, H. Q. Bao, H. Li, M. Lei, T. H. Peng, J. K. Jian, J. Liu, W. Y. Wang, W. J. Wang, X. L. Chen
J. Am. Chem. Soc. 131 (2009) 1376-1377

Ultrasonic Field Induced Chiral Symmetry Breaking of NaClO3 Crystallization
Y. T. Song, W. C. Chen, X. L. Chen
Crystal Growth & Design 8 (2008) 1448-1450

Observation of spin-glass behavior in antiperovskite Mn3GaN
B. Song, J. K. Jian, H. Q. Bao, M. Lei, H. Li, G. Wang, Y. P. Xu, X. L. Chen
Appl. Phys. Lett. 92 (2008) 192511

YBa3B 9O18 : A Promising Scintillation Crystal
M. He, X. L. Chen, Y. P. Sun, J. Liu, J. T. Zhao, C. J. Duan
Crystal Growth & Design 7 (2007) 199-201

Enhancement of ferroelectric properties of Na1/2Bi1/2TiO3-BaTiO3 single crystal by Ce dopings
J.Bubesh Babu, M. He, D. F.Zhang, X. L.Chen
Appl. Phys. Lett. 90 (2007) 102901

Growth of GaN single Crystal Using Ca-Li 3 N Composite flux
G. Wang, J. K. Jian, W. X. Yuan, X. L. Chen
Crystal Growth & Design 6 (2006) 1157-1160

Structure determination and relative properties of novel noncentrosym metric borates MM '(4)(BO3)(3) (M = Na, M ' = Ca and M = K, M ' = Ca, Sr)
L. Wu, X. L. Chen, Y. P. Xu, Y. P. Sun
Inorg. Chem. 45 (2006) 3042-3047

Uniaxial Crystal Slabs as Amphoteric-Reflecting Media
Y. X. Du, M. He, X. L. Chen, W. Y. Wang, D. F. Zhang
Phys. Rev. B 73 (2006) 245110

Growth of bulk GaN single crystals by flux method
X. L. Chen
Science and Technology of Advanced Materials 6 (2005) 766-771

Negative refraction: An intrinsic property of uniaxial crystals
X. L. Chen, M. He, Y. X. Du, W. Y. Wang, D. F. Zhang
Phys. Rev. B 72 (2005) 113111-4

Route to GaN and VN Assisted by Carbothermal Reduction Process
H. Z. Zhao, M. Lei, X. A. Yang, J. K. Jian, X. L. Chen
J.Am.Chem. Soc. 127 (2005) 15722-15723

Structure determination and relative properties of novel cubic borates MM '(4) (BO 3 )(3) (M = Li, M ' = Sr; M = Na, M ' = Sr, Ba)
L. Wu, X. L. Chen, H. Li, M. He, Y. P. Xu, X. Z. Li
Inorg. Chem. 44 (2005) 6409-6414

Preparation and optical properties of prism-shaped GaN nanorods
J. K. Jian, X. L. Chen, Q. Y. Tu, Y.P. Xu, L. Dai, and M. Zhao
J. Phys. Chem. B 108 (2004) 12024-12026

Syntheses, Thermal Stability and Structure Determination of the Novel Isostructural RBa3B9O18 (R= Y, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm,Yb)
X. Z. Li, C. Wang, X. L. Chen, H. Li, L. S. Jia, L. Wu, Y. X. Du, Y. P. Xu
Inorg. Chem. 43 (2004) 8555-8560