Details of the Faculty or Staff----Institute of Metal Research

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LI Da
Title:professor	Email: dali@imr.ac.cn
Tel. : +86-24-83978846	FAX: +86-24-23891320
Division: Shenyang National Laboratory for Materials Science
Address: Institute of Metal Research Chinese Academy of Sciences (IMR CAS), 72 Wenhua Road, Shenyang, China, 110016

Experience：

Education Experience

Ph.D. Program: 03/2000-01/2004
Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS), under the supervision of Prof. Dr. Z.D. Zhang.
Major: Materials Physics and Chemistry/Magnetism and Magnetic Materials

M.S. Program: 09/1997-03/2000
Northeastern Postgraduate Academy, Northeastern University, Shenyang, China
Major: Material Science

B.S. Program: 09/1993-07/1997
Department of nonferrous metal metallurgy, Northeastern University, Shenyang, China

Work experience

10/2011 – present
Professor, Shenyang National Laboratory for Materials Science, Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS), Shenyang, China.

07/2010 – 01/2011
Visiting scholar, Department of Physics, at the State University of New York at Buffalo (USA).

09/2007 –09/2011
Research Associate, Shenyang National Laboratory for Materials Science, Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS), Shenyang, China.

03/2004 – 09/2007
Research Assistant,Shenyang National Laboratory for Materials Science, Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS), Shenyang, China.

06/2006 – 07/2006
Visiting scholar, International Center for Theoretical Physics (ICTP), Italy.

06/2002 – 06/2003
Ph. D. candidate, Korea Institute of Machinery and Materials, South Korea.

Research Interest：

Magnetic, electrical transport and electromagnetic-wave absorption properties of functional nanomaterials; Nano-manufacturing, nanocomposites and advanced materials processing and development; Engineering of Magnetic Nanostructures for magnetic storage applications; Nanostructured Magnetic Compounds.

Research Achievement：

(1) The electronic transport properties of a composite system comprising zero dimensional superconducting NbC(C) nanocapsules and carbon nanofiber matrix were studied. The temperature dependence of electrical resistivity of the specimen pellet follows the Mott’s T^？1/4 law in a temperature range between the T_C of NbC and 300 K, owing to a strong degree of structural disorder in the carbon matrix. Below the T_C of NbC, when the change of its electrostatic energy DE is far greater than the thermal energy, an electron will be localized on an isolated NbC nanocrystal at very low temperatures, leading to “Coulomb Blockade.” As a result, a collective behavior of the single-electron tunneling effect takes place in a three-dimensional granular superconductors’ network composed of the NbC/carbon/NbC tunneling junctions. The superconducting gap of NbC crystals is not found in the current-voltage curves, due to the suppression of surface superconductivity through the contact between NbC and carbon shells. (Phys. Rev. B 73, 193402, 2006)

(2) Electromagnetic-wave absorption by FeCo/C nanocapsules has been investigated. A reflection loss (RL) exceeding -20 dB can be obtained for all frequencies within the 2–18 GHz range by choosing an appropriate layer thickness between 1.6 and 8.5 mm. The broadest bandwidth (RL values exceeding -10 dB) from 10 to 18 GHz, covering half of the X-band and the whole Ku-band, is obtained for a 2 mm layer. Since the details of the observed weak resonance peaks in the permittivity and the permeability curves are not quite understood, it is important to establish to which extent these fine structures affect the absorption properties. The μr and er spectra were smoothed by a fifth-order polynomial fitting and the RL plots were obtained on the basis of these smoothed data. Three dimensional RL plots without and with smoothing the mr and er spectra reveals in detail the very limited influences of the fine-structures on the absorption properties. FeCo/C nanocapsules seem very attractive for application in radar-wave absorption. (Appl. Phys. Lett. 95, 023114, 2009)

(3) The hard magnetic properties of Fe3Se4 nanostructures were studied both experimentally and theoretically. Magnetic measurements showed that Fe3Se4 nanoparticles can exhibit giant coercivity exceeding 40 kOe at low temperature (10K). This unusually large coercivity is attributed to the uniaxial magnetocrystalline anisotropy of the monoclinic structure of Fe₃Se₄ with ordered cation vacancies. The measured anisotropy constant is 1.0×107 erg/cm³, consistent with the result from first-principles calculations. The magnetization reversal mechanism of the nanoparticles is found to be incoherent spin rotation. (Appl. Phys. Lett. 99, 202103, 2011)

Service to the International Professional Societies：

Manuscript reviewer for Crystal Growth & Design, Journal for Nanoscience and Nanotechnology (JNN) and Journal of Applied Physics.

Honors：

Publication：

(1) Xiaolei Shang; Xiaoling Men; Qifeng Kuang; Shaojie Li;？Da Li; *？Zhidong Zhang ; Controllable connection of Fe₂Se₃？double chains and Fe(dien)2 complexes for organic-inorganic hybrid ferrimagnet with a large coercivity,？Nanomaterials, 2023, 13(3): 487

(2) Qifeng Kuang; Xiaoling Men; Xiaolei Shang; Bing Yang; Yangtao Zhou; Bo Zhang; Zhiwei Li;？Da Li; *？Zhidong Zhang ; Magnetism of Tetragonal β-Fe3Se4 Nanoplates Controllably Synthesized by Thermal Decomposition of (β-Fe₂Se₃)₄[Fe(tepa)] Hybrid,？Magnetism, 2022, 2: 31-44

(3) Desheng Pan; Qifeng Kuang; Peng Tong; Wei Tong; Liubing Fan; Jing Zhao;？Da Li; *？Chuljin Choi; Zhidong Zhang ; Self-assembly of 1D FeSe₂？chains and Fe(dien)₂？complexes for ferrimagnetic inorganic-organic hybrid cuboids,？Journal of Magnetism and Magnetic Materials, 2022, 542: 168585

(4) Li, Y.; Pan, D. S.; Zhou, Y. T.; Kuang, Q. F.; Wang, C. W.; Li, B.; Zhang, B. S.; Park, J.;？Li, D.*; Choi, C.; Zhang, Z. D., Enhanced magnetic properties and thermal stability of highly ordered？_ε-Fe₃N_1+x？(-0.12≤x≤-0.01) nanoparticles.？Nanoscale？2020, 12, (19), 10834-10841.

(5) Zhou, H. T.; Pan, D. S.; Li, Y.;？Li, D.*; Choi, C. J.; Zhang, Z. D., Magnetic transitions in metal-organic frameworks of [(CH₃)₂NHA₂]FeII(HCOO)₃, [(CH₃)₂NH₂]CoII(HCOO)₃？and [(CH₃)₂NH₂]Fe^IIIFe^II(HCOO)₆.？J Magn Magn Mater？2020, 493, 165715.

？(6) Li, Y.; Kuang, Q. F.; Men, X. L.; Wang, S. G.;？Li, D.*; Choi, C. J.; Zhang, Z. D., Anisotropic Growth and Magnetic Properties of α''-Fe16N2@C Nanocones.？Nanomaterials？2021, 11, (4), 890.

(7) Wang, X. L.*; Geng, Q. Y.; Shi, G. M.; Zhang, Y. J.;？Li, D.*, MOF-derived yolk-shell Ni/C architectures assembled with Ni@C core-shell nanoparticles for lightweight microwave absorbents.？Crystengcomm？2020, 22, (41), 6796-6804.

(8) Feng, Y.;？Li, D.*; Bai, Y.; Hua, A.; Pan, D.; Li, Y.; Wang, Y.; He, J.; Wang, Z.; Zhang, Y.; Liu, W.; Zhang, Z., The Effect of Core–Shell Structure on Microwave Absorption Properties of Graphite-Coated Magnetic Nanocapsules.？J Electron Mater？2019, 48, 1249-1435.

(9) Desheng Pan; Yong Li; Zheng Han; Bing Li; Chinwei Wang; Teng Yang;？Da Li; *？Chuljin Choi; Zhidong Zhang ; Organic-Inorganic Hybrid (β-Fe3Se4)4[Fe(teta)1.5] (teta = triethylenetetramine) Nanoplates: Solution Synthesis and Magnetic Properties,？Chemistry of Materials, 2018, 30(24): 8975-8982？

(10) Li, Y.; Pan, D. S.;？Li, D.*; Feng, Y.; Choi, C. J.; Liu, W.; Zhang, Z. D., Catalytic synthesis and enhanced Curie temperature of ？-Fe3N@C nanostructure synthesized in a tetraethylenepentamine solution.？J Magn Magn Mater？2018, 465, 736-742.

(11) Zhang, Y. J.; Zhu, Y.; Wang, K. J.;？Li, D.*; Wang, D. P.; Ding, F.; Meng, D.; Wang, X. L.; Choi, C.; Zhang, Z. D., Controlled synthesis of Co2C nanochains using cobalt laurate as precursor: Structure, growth mechanism and magnetic properties.？J Magn Magn Mater？2018, 456, 71-77.

(12)？Da Li;*？Desheng Pan; Weilai Liu; Xiaoxi Li; Maolin Chen; Shaojie Li; Yong Li; Jun Tan; Dongming Sun; Zhenhua Wang; Zheng Han; Zhidong Zhang ; Controllable Phase Transition for Layered β-FeSe Superconductor Synthesized by Solution Chemistry,？Chemistry of Materials, 2017, 29(2): 842-848

(13) Feng, Y.;？Li, D.*; Jiang, L. W.; Dai, Z. M.; Wang, Y.; An, J.; Ren, W. J.; He, J.; Wang, Z. H.; Liu, W.; Zhang, Z. D., Interface transformation for enhanced microwave-absorption properties of core double-shell nanocomposites.？J Alloy Compd？2017, 694, 1224-1231.

(14) Zhu, Y.; Zhang, Y. J.; Wang, K. J.;？Li, D.*; Ding, F.; Meng, D.; Wang, X. L.; Zhang, * Z. D., One-pot synthesis of Ni/Ni₃C/Ni₃N nanocomposite: Structure, growth mechanism and magnetic properties.？Mater Res Bull？2017, 95, 79-85.

(15) J.J. Jiang,？D. Li*, D.Y. Geng, J. An, J. He, W. Liu, Z.D. Zhang, Microwave absorption properties of core double-shell FeCo/C/BaTiO3 nanocomposites, Nanoscale 6, 3967-3971 (2014). （ESI高被引论文）

(16) S.J. Li,？D. Li*, W. Liu, Z.D. Zhang, High Curie temperature and coercivity performance of Fe_3-xCrxSe₄？nanostructures,？Nanoscale？7, 5395-5402 (2015).？

(17)？D. Li*, D.S. Pan, S.J. Li, Z.D. Zhang, Recent developments of rare-earth-free hard-magnetic materials (invited review), Sci. China-Phys.？Mech. & Astron. 59, 617501 (2016).？

(18)？D. Li*, Y. Feng, D.S. Pan, L.W. Jiang, Z.M. Dai, S.J. Li, Y. Wang, J. He, and Z.D. Zhang, Negative imaginary parts of complex permeability and microwave absorption performance of core double-shelled FeCo/C/Fe_2.5Cr_0.5Se₄？nanocomposites,？RSC Adv.？6, 73020 (2016).？

(19)？D. Li*, S.J. Li, B.J. Dong, T. Yang, W. Liu, Z.D. Zhang, Large magnetocrystalline anisotropy of Fe3-xCrxSe4 single crystals due to Cr substitution,？EPL？109, 37004 (2015).？