<Publication Lists>

(A)   Journal Paper ---- (IF: 2018)

 

1.      J.C.A. Huang*, Y. Liou, Y.D. Yao, W.T. Yang, C.P. Chang, S.Y. Liao, and Y.M. Hu, "Large crystalline-induced magnetic anisotropy and field-direction-dependent magnetoresistance in Co(1-100)/Cr(211) superlattices", Phys. Rev. B 52, Rapid Com. (1995) 13110-13113. (SCI, IF: 3.813, ▲:22)

 

2.      J.C.A. Huang*, F.C. Tang, W.W. Fang, and Y.M. Hu, et. al., "Studies of magnetic anisotropies of Co(1-100)/Cr(211) and Co(11-20)/Cr(100) multilayers", J. Appl. Phys. 79(8) (1996) 4790-4792. (SCI, IF: 2.176, ▲:14)

 

3.      J.C.A. Huang*, Y.H. Lee, Y.M. Hu, and T.C. Chang, "Studies of anisotropic and giant magnetoresistance in Co/Cu(111) epitaxial multilayers", J. Appl. Phys.79(8) (1996) 6276 -6278. (SCI, IF: 2.176, ▲:14)

 

4.      J.C.A. Huang*, T.E. Wang, C.C. Yu, Y.M. Hu, P.B. Lee and M.S. Yang, "Epitaxial growth and characterization of (100) and (110) perma11oy films", J. Crystal Growth 171 (1997) 442-446. (SCI, IF: 1.742, ▲:38)

 

5.      Y.M. Hu*, J.C.A. Huang, C.C. Yu, and C.H. Tsao, "Magnetic anisotropy of [Ni₈₀Fe₂₀/Mo/Co] spin-valve films grown by MBE", IEEE Trans. Mag. 33 (1997) 3952-3954. (SCI, IF: 1.467, ▲:3)

 

6.      J.C.A. Huang*, Y.M. Hu, C.C. Yu, C.H. Tsao, and C.H. Lee, "Structural and magnetic characterizations of hcp Ni_1-xFe_x(0＜x＜20%) films”, Phys. Rev. B 57 (1998) p.11517-11520. (SCI, IF: 3.813, ▲:11)

 

7.      J.C.A. Huang*, Y.M. Hu, and C.C. Yu, “Magnetic and structural characterization of HCP permalloy films grown by molecular beam epitaxy”, J. Appl. Phys. Vol. 83 (1998) 7046-7048. (SCI, IF: 2.176, ▲:6)

 

8.      J.C.A. Huang*, L.C. Wu, A.C. Hsu, Y.M. Hu, T.H. Wu, and C.H. Lee, “Epitaxial growth, perpendicular magnetic anisotropy and domain structure of Co/Pt(311) and (111) multilayers”, Phys. Rev. B 59 (1999) 1209-1213. (SCI, IF: 3.813, ▲:9)

 

9.      J.C.A. Huang, T.H. Wu , A.C. Hsu, L.C. Wu and Y.M. Hu, "Structure and perpendicular magnetic anisotropy of a new CoPt_x, alloy grown by MBE", J. Magn. Magn. Mat. 193 (1999) 166-169 (SCI, IF: 2.002, ▲:1)

 

10.  C.H. Lee, J.C.A. Huang, Y.M. Hu and M.C. Shih, “X-ray investigation on the change of crystal orientation in epitaxial permalloy films induced by Mo island edges”, Jpn J. Appl. Phys. 38(1) (1999), pp.273-276. (SCI, IF: 1.452, ▲:0)

 

11.  J.C.A. Huang, C.H. Lee, Y.M. Hu, and C.C. Yu, “Self assembly and control of columnar structures in epitaxial permalloy films”, Phys. Rev. B. 62 (2000) 3929-3932. (SCI, IF: 3.813, ▲:4)

 

12.  Y.M. Hu*, J.C.A. Huang, S.Y. Huang, and T.H. Wu, “Kerr Effect of Ordered and Disordered Fe_1-xPt_x(001) Alloy Films”, IEEE Trans. Mag. 37 (2001) 2417-2419. (SCI, IF: 1.467, ▲:5)

 

13.  C.C. Yu, J.C.A. Huang, and Y.M. Hu, “Magnetic anisotropy of permalloy films grown on Mo(001) stepped surface”, J. Appl. Phys. Vol.89 (2001) 7380-7382. (SCI, IF: 2.176, ▲:1)

 

14.  J.C.A. Huang, Y.C. Chang, C.C. Yu, Y.D. Yao, Y.M. Hu, and C.M. Fu, “Mn doping effect on structure and magnetism of epitaxial (FePt)_1-xMn_x films”, J. Appl. Phys. Vol.93 (2003), p.1-4. (SCI, IF: 2.176, ▲:18)

 

15.  J.C.A. Huang, H.S. Hsu, Y.M. Hu, C.H. Lee, Y.H. Huang and M.Z. Lin, “Origin of ferromagnetism in ZnO/CoFe multilayers: diluted magnetic semiconductor or clustering effect?”, Appl. Phys. Lett. 85 (17) (2004), 3815. (SCI, IF: 3.495, ▲:94)

 

16.  Y.M. Hu*, J.C.A. Huang, C.W. Chen, C.H. Lee and M.J. Lin, “Perpendicular magnetization of epitaxial CrPt_x films”, J. Appl. Phys. Vol. 98 (2005), 013901. (SCI, IF: 2.176, ▲:0)

 

17.  Y.M. Hu*, C.W. Lin, and J.C.A. Huang, “Dependences of the Al thickness and annealing temperature on the structural, optical and electrical properties in ZnO/Al multilayers”, Thin Solid Films 497 (2006) 130-134. (SCI, IF: 1.939, ▲:37)

 

18.  Y.M. Hu*, Y.T. Chen, Z.X. Zhong, C.C. Yu, G.J. Chen, P.Z. Huang, W.Y. Chou, J. Chang, and C.R. Wang, “The morphology and optical properties of Cr-doped ZnO films grown using the magnetron co-sputtering method”, Appl. Surf. Sci. 254 (2008) 3873-3878. (SCI, IF: 4.439, ▲:43)

 

19.  Y.M. Hu*, J.W. Chiou, T.C. Han, Y.T. Chen, C.W. Hsu, G.J. Chen, W.Y. Chou, J. Chang, J.Y. Hsu, and Y.C. Yu, “Structural and morphological evolution in magnetron co-sputtered (Zn,Cr)O films”, J. Phys. D: Appl. Phys. 41 (2008) 205301. (SCI, IF: 2.373, ▲:11)

 

20.  Y.M. Hu*, C.W. Hsu, C.Y. Wang, S.S. Lee, S.J. Wang, T.C. Han, and W.Y. Chou, “Room-temperature ferromagnetism in co-sputtered Zn_1-xCr_xO films with low Cr content”, Scripta Materialia 61 (2009) 1028. (SCI, IF: 4.163, ▲:20)

 

21.  C.H. Chia*, Y.J. Lia, T.C. Han, J.W. Chiou, Y.M. Hu, and W.C. Chou, “High-excitation effect on photoluminescence of sol-gel ZnO nanopowder”, Appl. Phys. Lett. 96 (2010) 081903. (SCI, IF: 3.495, ▲:14)

 

22.  Y.M. Hu*, C.W. Hsu, C.Y. Wang, J.W. Chiou, T.C. Han, G.J. Chen, W.Y. Chou, and J. Chang, “Formation and identification of secondary oxide phases in co-sputtered ZnO:Cr films”, Thin Solid Films 518 (2010) 2916-2919. (SCI, IF: 1.939, ▲:7)

 

23.  C.H. Chia*, Y.J. Lai, W.L. Hsu, T.C. Han, J.W. Chiou, Y.M. Hu, Y.C. Lin, W.C. Fan, and W.C. Chou, "Biexciton emission from sol-gel ZnMgO nanopowders", Appl. Phys. Lett. 96 (2010) 191902. (SCI, IF: 3.495, ▲:9)

 

24.  C.M. Fu*, M.F. Kuo, Y.M. Hu, T.K. Liu, C.O. Chang, and C.S. Chou, "Dependence of magneto -electrical properties of Mn-doped ZnO films deposited under various gas ambience states ", IEEE Trans. Magn. 46 (2010) 2424-2426. (SCI, IF: 1.467, ▲:4)

 

25.  Y.M. Hu*, C.Y. Wang, C.W. Hsu, S.S. Lee, T.C. Han, and W.Y. Chou, "Raman scattering studies of Mn-doped ZnO thin films deposited under pure Ar or Ar + N₂ sputtering atmosphere", Thin Solid Films 519 (2010) 1272-1276. (SCI, IF: 1.939, ▲:12)

 

26.  Y.M. Hu*, S.S. Li, and C.H. Chia, "Correlation between saturation magnetization and surface morphological features in Zn_1-xCr_xO thin films", Appl. Phys. Lett. 98 (2011) 052503. (SCI, IF: 3.495, ▲:30)

 

27.  Y.M. Hu*, C.Y. Wang, S.S. Lee, T.C. Han, W.Y. Chou, and G.J. Chen, "Identification of Mn-related Raman modes in Mn-doped ZnO thin films", J. Raman Spectroscopy 42 (2011) 434-437. (SCI, IF: 2.879, ▲:24)

 

28.  J.W. Chiou*, S.Y. Chang, W.H. Huang, Y.T. Chen, C.W. Hsu, Y.M. Hu, J.M. Chen, C.-H. Chen, K. Kumar, and J.-H. Guo, "The characterization of Cr secondary oxide phases in ZnO films studied by X-ray spectroscopy and photoemission spectroscopy", Appl. Surf. Sci. 257 (2011) 4863-4866. (SCI, IF: 4.439, ▲:5)

 

29.  S.S. Li, and Y.M. Hu*,"Transition from weak ferromagnetism to strong paramagnetism in Zn_1-xCr_xO (0 ≤ x ≤0.026) thin films", Journal of Physics: Conference Series 266 (2011) 012018. (SCI, IF: 0.69, ▲:13)

 

30.  C.H. Chia*, J.N. Chen, and Y.M. Hu, “Photoluminescence due to inelastic exciton-exciton scattering in ZnMgO-alloy thin film” Appl. Phys. Lett. 99 (2011) 131908. (SCI, IF: 3.495, ▲:9)

 

31.  T.C. Han*, J.W. Chen, Y.H. Liu, and Y.M. Hu, “Grain size effect on magnetic and electric properties of LuMnO₃ nanocrystalline materials”, J. Appl. Phys. 113 (2013) 17B507. (SCI, IF: 2.176, ▲:1)

 

32.  C.C. Wang, C.M. Fu, and Y.M. Hu*, “Intrinsic defects responsible for the anomalous Raman peaks and the room-temperature ferromagnetism in nitrogen-doped ZnO thin films” Surf. Coat. Tech. 231 (2013) 307. (SCI, IF: 2.906, ▲:4)

 

33.  C.C. Wang*, C.M. Fu, Y.M. Hu, C.D. Huang, and H.L. Lin, “Influence of N₂ gas flow on the high-frequency magneto-electrical properties of ZnO thin films, IEEE Trans. Magn. 50, issue 1. (2014) (SCI, IF: 1.467, ▲:0)

 

34.  T.C. Han*, H.K. Hsu, and Y.M. Hu, “Grain size effect on magnetic and dielectric properties of hexagonal YbMnO₃ nanoparticles”, J. Appl. Phys. 117 (2015) 17D501 (SCI, IF: 2.176, ▲:3)

 

35.  Y.M. Hu^*, S.S. Li, C.H. Kuang, T.C. Han, and C.C. Yu, “Post-annealing effect on the room-temperature ferromagnetism in Cu-doped ZnO thin films”, J. Appl. Phys. 117 (2015) 17B901 (SCI, IF: 2.176, ▲:6)

 

36.  S. S. Li, R. W. Chuang, Y. K. Su*, and Y. M. Hu, “Bias voltage-controlled ferromagnetism switching in undoped zinc oxide thin film memory device”, Appl. Phys. Lett. 109 (2016) 252103. (SCI, IF: 3.495, ▲:5)

 

37.  Y. M. Hu*, J. Y. Li, N. Y. Chen, C. Y. Chen, T. C. Han and C. C. Yu, “Correlation between defect-related photoluminescence emission and anomalous Raman peaks in N-Al co-doped ZnO thin films”, Appl. Phys. Lett. 110 (2017) 141903. (SCI, IF: 3.495, ▲:2)

 

38.  Y. M. Hu*, J. Y. Li, N. Y. Chen, C. Y. Chen, T. C. Han and C. C. Yu, “Effect of sputtering power on crystallinity, intrinsic defects, and optical and electrical properties of Al-doped ZnO transparent conducting thin films for optoelectronic devices”, J. Appl. Phys. 121 (2017) 085302. (SCI, IF: 2.176, ▲:14)

 

(B)   Conference paper

 

1.      J.C.A. Huang, Y.M. Hu, and C.C. Yu, “Epitaxial control of crystal structure, surface morphology and magnetism on magnetic films and multilayers”, Proceedings of the 1st Meeting of Nano-structures (1996).

 

2.      Y.M. Hu, C.C. Yu, J.C.A. Huang, “The growth temperature dependence of the surface morphology and magnetic properties of NiFe thin Films”, Proceedings of The 18th R.O.C. Symposium on Electron Microscopy (1997) p.76-77.

 

3.      C.H. Lee, J.C.A. Huang, Y.M. Hu, M.C. Shih, “X-ray investigation of the transformations of epitaxial permalloy crystal structures induced by Mo seeding layers on Sapphires”, Proceedings of SRRC 1997 Annual Users’ Meeting and Symposium on Synchrotron Radiation Research (1997) p.39.

 

4.      Y.M. Hu*, Z.X. Zhong, J.Y. Liu, Y.Q. Su、Y.T. Chen, C.C. Yu、W.Y. Chou, C.R. Wang and Guo-Ju Chen, “Structural、optical and magnetic properties of Cr doped ZnO films grown by reactive magnetron co-sputtering”, in Proceedings of 2007 Annual meeting of the Physical Society of the Republic of China, (January 23 ~ 25, 2007, Taiwan, Taoyuan, National Central Univ.)

 

5.      Y.M. Hu*, Y.T. Chen, C.C. Yu, G.J. Chen, P.Z. Huang, W.Y. Chou, J. Chang and C.R. Wang, “The correlation between structural and optical properties in Zn_0.95Cr_0.05O diluted magnetic oxide films grown by magnetron sputtering method”, 2007 Taiwan association for magnetic technology & 19^th annual conference on magnetics, (July 29~ August 1, 2007, Taiwan, Yunlin, National Yunlin University of Science and Technology)

 

6.      Y.M. Hu*, Y.T. Chen, G.J. Chen, P.Z. Huang, W.Y. Chou, J. Chang and C.R. Wang, “The influences of Cr sputtering rate on the photoluminescence property and surface morphologies of Cr-doped ZnO films grown by magnetron co-sputtering method”, 2007 Taiwan association for magnetic technology & 19^th annual conference on magnetics, (July 29~ August 1, 2007, Taiwan, Yunlin, National Yunlin University of Science and Technology)

 

7.      Y.M. Hu*, J.W. Chiou, T.C. Han, Y.T. Chen, C.W. Hsu, G. J. Chen, P.Z. Huang, W.Y. Chou, J. Chang and C.R. Wang, “Microstructural evolution of the ZnO:Cr alloyed films grown using the magnetron co-sputtering method” in Proceedings of 2008 Annual meeting of the Physical Society of the Republic of China, (January 28 ~ 30, 2008, Taiwan, Hsinchu, NCTU).

 

8.      Y.M. Hu*, C.W. Hsu, C.Y. Wang, H.C. Lai, Y.T. Chen, S.J. Wang, J.W. Chiou, T.C. Han, C.C. Yu, G. J. Chen, J.Y. Huang, W.Y. Chou, J. Chang and C.R. Wang, “The effect of Ar+N₂ sputtering gas on Cr-doped ZnO films grown using the magnetron co-sputtering method” in Proceedings of 2008 Annual meeting of the Physical Society of the Republic of China, (January 28 ~ 30, 2008, Taiwan, Hsinchu, NCTU).

 

9.      C.W. Hsu, Y.M. Hu*, S.J. Wang, T.C. Han, G.J. Chen, J.Y. Huang, W.Y. Chou, J. Chang, “The structural and magnetic properties of Zn_1-xCr_xO films with low Cr content (x ≤ 0.08)” in Proceedings of 2009 Annual meeting of the Physical Society of the Republic of China, (January 19-21, 2009, Taiwan, changhua, NCUE).

 

10.  C.Y. Wang, Y.M. Hu*, S.S. Lee, T.C. Han, G.J. Chen, W.Y. Chou, J. Chang, “The structural evolution in Mn,N-codoped ZnO films grown using the magnetron co-sputtering method”, in Proceedings of 2009 Annual meeting of the Physical Society of the Republic of China, (January 19-21, 2009, Taiwan, changhua, NCUE).

 

11.  Y.M. Hu*, C.W. Hsu, T.C. Han, G.J. Chen, W.Y. Chou, J. Chang, “The structural, optical and magnetic properties of magnetron co-sputtered ZnO:Cr thin films”, The International Conference on Magnetism - ICM 2009 in Karlsruhe, Germany July 26-31, 2009.

 

12.  S.S. Li, J.Y. Li, Y.M. Hu*, “The evolution of structural, morphological and optical properties of co-sputtered ZnO:Cr thin films”, in Proceedings of 2010 Annual meeting of the Physical Society of the Republic of China (Feb. 2-4, 2010, Taiwan, Tainan, NCKU).

 

13.  S.S. Li, J.S. Kuang, Y.M. Hu*, “Influence of the growth atmosphere on the structural and optical properties of Mn-doped ZnO thin films”, in Proceedings of 2010 Annual meeting of the Physical Society of the Republic of China (Feb. 2-4, 2010, Taiwan, Tainan, NCKU).

 

14.  Y.M. Hu*, C.Y. Wang, S.S. Lee, and T.C. Han, “Identification of the anomalous and Mn-related Raman modes in Mn-doped ZnO thin films”, in Proceedings of 2010 Annual meeting of the Physical Society of the Republic of China (Feb. 2-4, 2010, Taiwan, Tainan, NCKU).

 

15.  S.S. Lee*, Y.M. Hu, “Effects of the Cr doping on the structural and magnetic properties of Zn_1-xCr_xO thin films”, in 2010 symposium on nano device technology (May 4-5, 2010, Taiwan, Hsinchu, NDL)

 

16.  Y.M. Hu*, S.S. Li, J.Y. Li, and J.S. Kuang, “Surface morphological dependence of defect-induced ferromagnetism in Zn_1-xCr_xO thin films”, in Proceedings of 2011 Annual meeting of the Physical Society of the Republic of China (Jan. 25-27, 2011, Taiwan, Taipei, NTNU).

 

17.  Yu-Min Hu*, S. S. Li, J. Y. Li, J. S. Kuang, C. H. Chia, “Correlation between saturation magnetization and surface morphological feature in Zn_1-xCr_xO thin films”, The Asia International Magnetics Conference, InterMag 2011, April 25-29 (2011), at the Taipei International Convention Center (TICC) in Taipei.

 

18.  J.S. Kuang, C.C. Wang, C.M. Fu, and Y.M. Hu*, “Post-annealing effect on the ferromagnetism of Cu-doped ZnO films”, in The 15th International Conference on Thin Films (ICTF-15) (November 8-11, 2011, Japan, Kyoto).

 

19.  C.C. Wang*, C.M. Fu, and Y.M. Hu, “Intrinsic defects responsible for the anomalous Raman peaks and the room-temperature ferromagnetism in nitrogen-doped ZnO thin films”, in Proceedings of the TACT 2011 International Thin Films Conference (November 20-23, 2011, Taiwan, Kenting, Pingtung)

 

20.  J.Y. Li, H.H. Tang, Y.M. Hu^*, T.C. Han, and C.C. Yu, “Effect of sputtering power on carrier concentration in Al-doped ZnO thin films” in Proceedings of the TACT 2011 International Thin Films Conference (November 20-23, 2011, Taiwan, Kenting, Pingtung)

 

21.  C.C. Wang*, C.M. Fu, and Y.M. Hu, “Intrinsic defects responsible for the anomalous Raman peaks and the room-temperature ferromagnetism in nitrogen-doped ZnO thin films”, The 24th Conference of the Magnetism and Magnetic Technologies (June 27-29, 2012, Taiwan, Kaohsiung)

 

22.  T.C. Han, S. Pan, Y. Liu, and Y.M. Hu, “Grain size effect on magnetic and electric properties of LuMnO₃ nanocrystalline materials”, The 12^th joint MMM-Intermag Conference (Jan. 14-18, 2013, Chicago, USA)

 

23.  J.S. Kuang, and Y.M. Hu*, “Post-annealing effect on the ferromagnetism in Cu-doped ZnO co-sputtered films”, in 2013 International Symposium on Advanced Magnetic Materials and Applications (ISAMMA) (July 21-215, 2013, Taiwan, Taichung)

 

24.  S.S. Li*, Y.K. Su, H.H. Tang, and Y.M. Hu, “Zinc defect enhanced saturation magnetization in Mn-doped ZnO thin films”, International Conference on Solid State Devices and Materials, SSDM 2013 (Sep. 24-27, Fukuoka, Japan)

 

25.  Z.D. Li*, and Y.M. Hu, “The preparation and physical properties of CuO and Cu₂O films deposited by magnetron sputtering CuO target”, The 26th Conference of the Magnetism and Magnetic Technologies (June 22-24, 2014, Taiwan, Hsinchu)

 

26.  Y.M. Hu^*, S.S. Li, C.C. Wang, C.M. Fu. “Defect-induced ferromagnetism in ZnO thin films”, The 26th Conference of the Magnetism and Magnetic Technologies (June 22-24, 2014, Taiwan, Hsinchu)

 

27.  Y.M. Hu*, S.S. Li, and Y.K. Su, “Bipolar resistive switching behavior and voltage-controlled ferromagnetism in ZnO thin film”, The 3rd of Asian Union of Magnetics Societies (IcAUMS) (Oct.28 - 31, 2014, Haikou City, Hainan Province, China).

 

28.  Y.M. Hu*, and S.S. Li, “The roles of defects and dopants in the ferromagnetism of ZnO-based thin films”, The 3rd of Asian Union of Magnetics Societies (IcAUMS) (Oct.28 - 31, 2014, Haikou City, Hainan Province, China).

 

29.  T.C. Han*, H. Hsu, and Y.M. Hu, “Grain size effect on magnetic and electric properties of hexagonal YbMnO₃ nanoparticles”, The 59^th Annual conference on magnetism and magnetic materials (Nov. 3-7, 2014, Honolulu, Hawaii, USA)

 

30.  T.C. Han*, Y. Lee, T. Chen, J. Chen and Y.M. Hu, “Effects of Co doping on site-disorder and magnetic properties of magnetoelectric GaFeO₃ nanoparticles”, The 59^th Annual conference on magnetism and magnetic materials (Nov. 3-7, 2014, Honolulu, Hawaii, USA)

 

31.  Y.M. Hu*, and S.S. Li, “Voltage-controlled ferromagnetism in pure ZnO thin films”, The 59^th Annual conference on magnetism and magnetic materials (Nov. 3-7, 2014, Honolulu, Hawaii, USA)

 

32.  Y.M. Hu*, and S.S. Li, “Post-annealing effect on the room-temperature ferromagnetism in Cu-doped ZnO thin films”, The 59^th Annual conference on magnetism and magnetic materials (Nov. 3-7, 2014, Honolulu, Hawaii, USA)

 

33.  Z. Y. Maio^*, Y. M. Hu, “氧化鎂薄膜電阻切換機制研究與磁性關係”, The 27th Conference of the Magnetism and Magnetic Technologies (June 28-30, 2015, NTNU, Taipei, Taiwan)

 

34.  Y.M. Hu*, and S.S. Li, “Correlation between resistive switching behavior and ferromagnetism in pure ZnO thin films”, The 20^th International conference on magnetism (July 5-10, 2015, Barcelona, Spain)

 

35.  Y.M. Hu*, and Z.D. Li, “The resistive switching and magnetic properties of CuO and Cu₂O films deposited by magnetron sputtering CuO target”, The 20^th International conference on magnetism (July 5-10, 2015, Barcelona, Spain)

 

36.  Z.D. Li*, and Y.M. Hu, “The preparation and physical properties of CuO and Cu₂O films deposited by magnetron sputtering CuO target”, The 27th Conference of the Magnetism and Magnetic Technologies (June 28-30, 2015, NTNU, Taipei, Taiwan)

 

37.  Shin Ru Chiou and Yu-Min Hu*, “Iimprovement in the resistive switching properties of Ag/HfO₂/p-type Si film device by doping cobalt”, 12th Coatings Science International 2016 (June 27- July 1, Noordwijk, Netherlands)

 

38.  Yen Wei Hsueh and Yu Min Hu*, “Effects of different top electrode metals on resistive switching properties of HfO₂ MIS device”, 12th Coatings Science International (June 27- July 1, 2016 Noordwijk, Netherlands)

 

Z.D. Li, and Y.M. Hu*, “The resistive switching and magnetic properties of CuO and Cu₂O films deposited by magnetron sputtering CuO target”, 12th Coatings Science International 2016 (June 27- July 1, Noordwijk, Netherlands)

 

<Research Proposal>

 

<Lab. details>

Research Interests：

Oxide thin films have received much attention and triggered comprehensive investigation in both theoretical and technological aspects due to two important and independent issues of room-temperature ferromagnetism (RT-FM) and resistive switching (RS) properties. The origin of magnetic moments and their coupling and the cause of switching between high/low resistance states are attracted for academic research; On the other hand, oxide thin films are key materials for RRAM and also the future spintronic devices. In recent years, researchers have noticed that both the RT-FM and RS properties of oxide thin films would be closely related with intrinsic defects. Whether all these properties and findings could be explained using a common physical mechanism is worth further investigation.

We are investigating comprehensively the correlation and dependence among the RT-FM、RS and intrinsic defects, finding the possibility of electric control of magnetism. We will prepare a series of oxide-based RRAM units, including films of ZnO, Cu_xO and Ta₂O₅、ZnO films doped with Co, Ni, Cu、Cu_xO films doped with Co, Ni、bilayer films of Cu_xO/ZnO, TiO₂/ZnO, Ta₂O₅/ZnO, Co:ZnO/BFO, Ni:ZnO/BFO, Co:Cu_xO/BFO, and Ni:Cu_xO/ BFO、spin memristive MTJ: Co:ZnO, Co:Ta₂O₅, and Co:HfO₂. The research topics focus on the correlation of the RT-FM and RS properties in these undoped and magnetic-element-doped oxide thin films and bilayer films, where the impact of using a ferromagnetic metal electrode in these RRAM devices will also be examined. Execution and achievement of the research will be of benefit to a better understanding of the RT-FM and RS in oxide thin films and to finding the possibility of electric control of magnetism for future device applications.

 

Main facilities：

Facilities	Introduction of Facilities
	Ø   Vacuum pressure down to about 7´10-10 torr。 Ø   Load Lock Chamber + Growth Chamber。 Ø   Each chamber equipped with both mechanical and turbo pumps。 Ø   Three sputtering guns。 Ø   DC and RF power suppliers。 Ø   Touch panel。
	Ø   Temperature：10K ~ 300K Ø   Magnetic field：+1.3 T ~ -1.3 T Ø   Measurements: resistivity、carrier type and concentration、carrier mobility。