80. P.T.Phong, N.V. Dai, D.H.Manh, T.D.Thanh, N.V. Khiem L.V.Hong, N.X.Phuc Electrical and magnetic behavior of La0.7Ca0.3MnO3/La0.7Sr0.2Ca0.1MnO3composites Journal of Magnetism and Magnetic Matterials 322, 2737, 2010.

79. L.V. Bau, D.N.H.Nam, N.V. Khiem, L.V. Hong and N.X. Phuc Observation of mixed-phase behavior in the Mn-doped cobaltite La0.7Sr0.3Co1-xMnxO3(x=0-0.5), Journal of Magnetism and Magnetic Materials 322 (2010) 753–755. 2010.

78. N. V. Khiem , P. T. Phong , L. V. Bau, D. N. H. Nam, L. V. Hong and, N. X. Phuc Critical parameters near the ferromagnetic – paramagnetic phase transition in La0.7A0.3(Mn1-xBx)O3 (A= Sr; B=Ti and Al; x=0.0 and 0.05) compounds Journal of Magnetism and Magnetic Materials (Europe) , 2009.

77. N. V. Khiem, P. T. Phong, D. H. Manh, L. V. Hong, N. X. Phuc EFFECT OF Al2O3 ON ELECTRICAL TRANSPORT OF (1 –x)La0,7Ca0,3MnO3 + xAl2O3 NANOCOMPOSITES Journal of Magnetism and Magnetic Materials (Europe) , 2009.

76. N.V.Khiem, P.T. Phong, N. V. Dai, D. H. Manh, L. V. Hong, N.X.Phuc Electrical properties of Ag - La0,7Ca0,3MnO3 Materials Letters 63, 899, 2009.

75. Phong, P.T., Khiem, N.V., Dai, N.V., Manh, D.H., Hong, L.V., Phuc, N.X. Influence of Al2O3 on low-field spin-polarized tunneling magnetoresistance of (1-x) La0.7Ca0.3MnO3 +xAl2O3 composites Materials Letters (Europe) , 2009.

74. P.T.Phong, N.V.Dai, D.H. Manh, N.V.Khiem, L.V.Hong, N.X. Phuc Influence of Al2O3 on low-temperature resistivity minima in (1-x)La0.7Ca0.3MnO3 +xAl2O3composites Journal of Alloys and Compounds 485, L39, 2009.

73. P.T.Phong, N. V. Khiem, N.V.Dai, D.H.Manh, L.V. Hong, N.X.Phuc Low-Field Magnetoresistance of (1–x) La0.7Ca0.3MnO3 + xAg composites Journal of Alloys and Compounds 484, 12, 2009.

72. Phong P.T., Khiem N.V, Manh D.H., Hong L.V., Phuc N.X. Nature of polaron hopping conduction andeffect of add Al2O3 on the transportproperties of La0.7Ca0.3MnO3nanocompounds Advances in Natural Sciences (Vietnam, 2009.

71. N. V. Khiem , P. T. Phong, L. V. Hong and N. X. Phuc TRANSPORT AND MAGNETIC PROPERTIES AND MAGNETORESISTANCE OF (1 - x)La0.7Ca0.3MnO3/ xLa0.7Sr0.2Ca0.1MnO3 MANGANITES Solid State Communacation (Europe), 2009.

70. Bau, L.V., Khiem, N.V., Nam, D.N.H., Hong, L.V., Phuc, N.X. Coexistence and conversion of phases in Ti-doped manganite observed by magnetization and transport measurements Journal of Korean Physical Society (Korea) , 2008.

69. N. V. Khiem, P. T. Phong, L. V. Bau, D. N. H. Nam, N. V. Dai, L. V. Hong and, N. X. Phuc Critical behavior near the ferromagnetic-Paramagnetic phase transition in La0.7Sr0.3(Mn0.95Ti0.05O3 sample, Proceeding of APCTP – ASEAN Workshop on Advanced Materials Science andNanotechnology (AMSN), pp. 819-823. 2008.

68. N. V. Khiem, L. V. Bau, P. T. Phong, L. V. Hong, N. V. Dai, D. N. H. Nam and N. X. Phuc, Critical Exponents for the Ferromagnetic-Paramagnetic Transition in La0.7Sr0.3Mn0.8Ti0.2O3, Journal of the Korean Physical Society, Vol. 52, No. 5, pp. 1518-1521,2008.

67. N. V. Khiem, P. T. Phong, L. V. Hong and, N. X. Phuc EFFECT OF COULOMB BLOCKAGE ON THE LOW-TEMPUTURE RESISTIVITY MINIMUM OF (1- x)La0.7Ca0.3MnO3/xAl2O3 (x = 0; 0.01; 0.02; 0.03; 0.04; 0.05) Proceeding of APCTP–ASEAN Workshop on Advanced Materials Science and Nanotechnology (AMSN2008) - Nha Trang, Vietnam – September 15-21, 2008

66. N. V. Khiem, P. T. Phong, L. V. Hong and , N. X. Phuc GRAIN BOUNDARY EFFECT ON THE ELECTRICAL AND MAGNETIC PROPERTIES OF (1-x)La0.7Ca0.3MnO3/xLa0.7Sr0.2Ca0.1MnO3 (x=0, 0.01, 0.02, 0.03, 0.04 and 0.05) NANOMANGANITES Proceeding of APCTP–ASEAN Workshop on Advanced Materials Science and Nanotechnology (AMSN2008) - Nha Trang, Vietnam – September 15-21, 2008

65. L.V.Bau, N.V.Khiem, L.V.Hong, N.X.Phuc and D.N.H.Nam Influence of substitution for Mn by someother elements on the electric-magneticproperties of perovskite (La,Sr)MnO3 Proceeding of APCTP – ASEAN Workshop on Advanced Materials Science andNanotechnology (AMSN2008), pp. 808-812. 2008.

64. Phong, P.T., Khiem, , N.V., Manh, D.H., Hung, V.V., Hong, L.V., Phuc, N.X. TUNNELING MAGNETORESISTANCE OF (1-x)La0.7Ca0.3MnO3+xAg nanocomposites Proceeding of APCTP–ASEAN Workshop on Advanced Materials Science and Nanotechnology (AMSN2008) - Nha Trang, Vietnam – September 15-21, 2008

63. D. N. H. Nam, N. V. Dai, L. V. Hong and N. X. Phuc, L. V. Bau, P. Nordblad and R. S. Newrock Effects of Selective Dilution on the Magnetic Properties of La0.7Sr0.3Mn1-xM'xO3 (M' = Al, Ti), Journal of the Korean Physical Society, Vol. 52, No. 5, pp. 1460-1464, 2008.

62. P. T. Phong, N. V. Khiem, V. V. Hung, H. D. Chinh, D. H. Manh, .L. V. Hong, N. X. Phuc EFFECT OF PARTICLE SIZE ON THE MAGNETORESISTANCE OF La0.7Ca0.3MnO3 Proceeding of IWNA 2007, Vung Tau, Viet Nam, Nov. 15-17, 2007

61. Le Viet Bau, Nguyen Van Khiem, Dao Nguyen Hoai Nam, Le Van Hong and Nguyen Xuan Phuc Electric-magnetic phase diagram of La0.7Sr0.3Co1-xMnxO3, The Procceding of The Sixth National Physisc Conference, Vung Tau, Vietnam, pp. 111-115. 2007

60. L. V. Bau, N. V. Khiem, D. N. H. Nam, L. V. Hong, N. X. Phuc GIẢN ĐỒ PHA ĐIỆN TỪ CỦA HỆ HỢP CHẤT La0.7Sr0.3Co(1-x)MnxO3 Tuyển tập báo cáo tại hội nghị Vật lý chất rắn toàn quốc lần thứ 5, Vũng Tàu 12-14/11/2007, Hội Khoa học Vật liệu Việt Nam - 2007, p. 111, 2007

59. P. T. Phong ,N. V. Khiem, V. V. Hung , H. D. Chinh, N. V. Dai, N. X. Phuc, L. V. Bau, L. V. Hong, D. H. Manh HIỆU ỨNG XUYÊN NGẦM CỦA ĐIỆN TỬ PHÂN CỰC SPIN TRONG VẬT LIỆU SẮT TỪ La0.7Ca0.3MnO3 Tuyển tập báo cáo tại hội nghị Vật lý chất rắn toàn quốc lần thứ 5, Vũng Tàu 12-14/11/ 2007

58. N. V. Khiem, P. T. Phong , V. V. Hung , H. D. Chinh, N. X. Phuc, L. V. Bau, L. V. Hong, D. H. Manh LOW - FIELD MAGNETORESISTANCE BEHAVIOUR OF THE (1-x)La0.7Ca0.3MnO3 /xAg (x=0÷0.5) NANOMANGANITE COMPOSITES SYSTEMS Tuyển tập báo cáo tại hội nghị Vật lý chất rắn toàn quốc lần thứ 5, Vũng Tàu 12-14/11/2007, Hội khoa học Vật liệu iệt Nam - 2007. p. 117 , 2007

57. P. T. Phong, N.V. Dai, D.H.Manh, N. V. Khiem, L.V. Bau, H.D. Chinh V.V. Hung L. V. Hong and N. X. Phuc Low-Field magnetoresistance behaviour of the (1-x)La0,7Ca0,3MnO3/xAg (x = 0÷0.5) nanomanganite composites systems Advances in Natural Sciences (Vietnam) , 2007

56. N. V. Dai, D. V. Son, S. C. Yu, L. V. Bau, L. V. Hong, N. X. Phuc, and D. N . H. Nam Room-temperature magnetic entropy change in La0.7Sr0.3Mn1-xMxO3 (M = Al, Ti), phys. stat. sol. (b) 244, No. 12, 4570–4573 / DOI 10.1002/pssb.200777362, 2007

55. P. T. Phong, N. V. Khiem, N. X. Phuc and L. V. Hong STRUCTURE, ELECTRICAL TRANSPORT AND MAGNETORESISTANCE IN (1-x) La0.7Sr0.3MnO3 +xTiO2 (x=0.0-0.006) Communacation in Physics (Vietnam) , 2007

54. N. H. Nam, V. V. Hung, B. D. Huan, L. H. Thiem, N. Hanh, H. N. Nhat, N. Chau, N. V. Khiem, H. D. Chinh TỔNG HỢP, CẤU TRÚC VÀ TÍNH CHẤT CỦA VẬT LIỆU TỔ HỢP PEROVSKITE La0.7A0.3MnO3/xMe (A=Ca, Sr; Me=Au, Ag) Tuyển tập báo cáo tại hội nghị Vật lý chất rắn toàn quốc lần thứ 5, Vũng Tàu 12-14/11/ 2007

53. L. V. Bau, N. V. Khiem, D. N. H. Nam, L. V. Hong, N. X. Phuc TRẠNG THÁI SPIN CỦA CÁC ION Co TRONG HỢP CHẤT La0.7Sr0.3Co(1-x)MnxO3 Tuyển tập báo cáo tại hội nghị Vật lý chất rắn toàn quốc lần thứ 5, Vũng Tàu 12-14/11/2007, Hội Khoa học Vật liệu - 2007, p. 292 , 2007

52. N. V. Khiem, P. T. Phong, L. V. Bau, L. V. Hong and N. X. Phuc Influence of annealing time on the low field magnetoresistance of La0.7Ca0.3MnO3 + 3%Al2O3, The Fifteenth International Conference on composites/nano Engineering (ICCE - 15), Haikou, Hainan Island, China, Hawaii of the Orient, 2007.

51. Le Viet Bau, Nguyen Xuan Phuc, The-Long Phan, Seong-Cho Yu, and Per Nordblad Glassy ferromagnetism and frustration in La0.7Ba0.3Mn0.7Ti0.3O3, JOURNAL OF APPLIED PHYSICS 99, 08Q306, 2006

50. X. P. Nguyen, V.B. Le Mixed phase behaviour in hole-doped perovskite materials, Solid State Phenomena Vol 111, pp.7-11, 2006

49. N. V. Khiem, L. V. Bau, T. D. Trung,N. X. Phuc, P. T. Phong, L. V. Hong Parameters of Conduction of (1-x)La0.7Ca0.3MnO3 + xAl2O3 (0  x 5 wt%) Nanocomposites, Reported in 1st IWOFM – 3rd IWONN confference, 2006

48. Nam, D.N.H., Bau, L.V., Khiem, N.V., Dai, N.V., Hong, L.V., Phuc, N.X., Newrock, R.S., Nordblad, P. Selective dilution and magnetic properties of La_{0.7}Sr_{0.3}Mn_{1-x}M'_xO_3 (M' = Al, Ti) (2006) Physical Review B 73, 184430 (2006), (USA), 2006

47. P. T. Phong, N. V. Khiem, N. X. Phuc, L. V. Hong SỰ PHỤ THUỘC CỦA CẤU TRÚC TINH THỂ VÀ BIÊN HẠT CỦA La0.7Ca0.3MnO3 +3%Al2O3 VÀO NHIỆT ĐỘ NUNG Advance in Optic Photonic Spectroscopy and Applications; Vietnam Academic Press. pp. 176-181 , 2006

46. M. Tseggai, R. Mathieu, P. Nordblad, R. Tellgren, L. V. Bau, D. N. H. Nam, N. X. Phuc, N. V. Khiem, Effects of magnesium substitution on the magnetic properties of Nd0.7Sr0.3MnO3 Journal of Solid State Chemistry, Volume 178, Issue 4, April 2005, Pages 1203-1211, 2005

45. T.L. Phan, S.C. Yu, N.V. Khiem, M.H. Phan, J.R. Rhee, N.X. Phuc. Electronic and magnetic phase diagram of La0.5Sr0.5Co1–xFexO3(0x0.6) perovskites Journal of Applied Physics (USA) , 2005

44. T. L. Phan, L. V. Bau, N. V. Khiem, N. X. Phuc, and S. C. Yu ESR study of Sr-doped LaCoO3cobaltites phys. stat. sol. (b) 242, No. 7, pp. 1522-1527, 2005

43. Phan, T.L., Khiem, N.V., Zidanic, J., Phuc, N.X., Yu, S.C. Influence of A-site substitution on the EPR parameters of La0.7A'0.3MnO3 (A' = Sr, Ba) compounds IEEE TRANSACTIONS ON MAGNETICS, VoL.41, No.10, OCTOBER 2005, pp. 2769-2771. (USA) 2005
42. T. L. Phan, M. H. Phan, L. V. Bau, N. X. Phuc, S. C. Yu Magnetic frustration effects in Fe-doped cobalt oxides J. Magn. .Magn. Mater. 290-291, pp. 1005-1008, 2005
41. Khiem, N.V., Bau, L.V., Phan, T.L., Dai, N.V., Yu, S.C., Phuc, N.X. Magnetoresistance and magnetocaloric effects in La0.7Sr 0.3Mn0.8Ti0.2O3 INTERMAG ASIA 2005: Digests of the IEEE International Magnetics Conference, pp. 743, 2005
40. N.V. Khiem, N.X. Phuc, T.L. Phan, S.C. Yu, M.H. Phan Spin dynamics and magnetic frustration effects in La1–xSrxCoO3 Journal of Applied Physics, 97, pp. 10A509-10A512 (USA) , 2005

39. T. L. Phan, L. A. Tuan, L. V. Bau, M. H. Phan, N. V. Khiem, N. X. Phuc, S. C. Yu Spin dynamics and magnetotransport behaviors of La0.5Sr0.5Co1-xFexO3 (x=0, 0.1) compounds The Third Korea-Vietnam International Joint Symposium, May 23-26, 2005.

38. M. Tseggai, R. Mathieu, P. Nordblad, R. Tellgren, L. V. Bau, D. N. H. Nam, N. X. Phuc, N. V. Khiem, G. Andre’, F. Boure’e Effects of magnesium substitution on the nuclear and magnetic structures of Nd0.7Sr0.3MnO3 Materials structure 11(1a), p. 19, 2004

37. L. V. Bau, N. V. Khiem, D. N. H. Nam, N. V. Dai, L. V. Hong and N. X. Phuc Electric and magnetic properties of La0.7Sr0.3Co1-xMnxO3 (x = 0 - 0.5) compounds Proceeding of Sixth National Physic Conference, Ha Noi, November 23 - 25th, pp. 1017-1021. 2004

36. Le Viet Bau, Nguyen Van Khiem, Nguyen Van Dai, Le Van Hong, Nguyen Xuan Phuc and Dao Nguyen Hoai Nam Electric-Magnetic properties and Phase separation of La0.7Ba0.3Mn1-xTixO3 (x = 0 - 0.2) compounds The model problems of Solid state (Vietnam), PartIII-B (2004), pp. 282 - 286. 2004

35. L. V. Bau, N. V. Khiem, N. V. Dai, D. N. H. Nam, L. V. Hong, N. X. Phuc and P. Nordblad Electric-Magnetic properties and Phase separation of La0.7Sr0.3Co1-xMnxO3 (x = 0 - 0.5) compounds Proceeding of The 9thAsia Pacific Physics Conference (9th APPC), Hanoi, Viet Nam, pp. 179 – 782, 2004

34. Le Viet Bau, Nguyen Van Khiem, Nguyen Van Dai, Le Van Hong, Nguyen Xuan Phuc,Dao Nguyen Hoai Nam and Do Hung Manh La0.7Sr0.3Mn1-xTixO3 compounds: magnetic, electric properties due to phase separation Proceeding of The Seventh Vietnamese-Germany Seminar on Physics and Engineering, Halong Bay, Viet nam, pp. 247-250, 2004

33. Phan, T.L., Huynh, T.N., Phan, M.H., Khiem, N.V., Phuc, N.X., Chung, Y.S., Rhee, J.R., Yu, S.C. Magnetic and transport properties of La0.5Sr0.5(FexCo1-x)O3 (0 x 0.2) perovskites Physica Status Solidi (B) Basic Research 241 (7), pp. 1573-1576. (Europe) , 2004

32. N. V. Khiem, D. N. H. Nam, L. V. Bau, N. X. Phuc Magnetic phase separation and coexistance of feromagnetic and glassy in La1-xSr¬xCoO3 28th Natiopnal conference on Theoretical PhysicsProceeding, Sam Son, 12-14 August 2003, pp. 107-113. 2004

31. L. V. Bau, N. V. Khiem, D. N. H. Nam, N. V. Dai, P. Nordblad, L. V. Hong and N. X. Phuc Negative Magnetisation in the LaCr1-yMnyO3 Compounds Proceeding of The 9thAsia Pacific Physics Conference (9th APPC), Hanoi 25th-31st, pp. 261-263. 2004

30. Bau, L.V., Khiem, N.V., Hong, L.V., Phuc, N.X., Nordblad, P., Nam, D.N.H. Non-uniform behavior of La0.7Sr0.3Co1−yMnyO3 (y=0.3 and 0.5) compounds Journal of Magnetism and Magnetic Materials, Volumes 272-276, Supplement 1,May 2004, Pages E975-E977(Europe) , 2004

29. L. V. Bau, N. V. Khiem, L. V. Hong, N. X. Phuc, P. Nordblad, and D. N. H. Nam Phase saparation behavior of La0.7Sr0.3Co1-yMnyO3 (y = 0.3 and 0.5) compounds Communications in Physics 14(3), pp. 134 -139, 2004

28. M. H. Phan, T. L. Phan, T. N. Huynh, S. C. Yu, J. R. Rhee, N .V . Khiem, N .X. Phuc Spin dynamics and spin-glass state in Fe-doped cobaltites Journal of Applied Physics (USA) , 2004

27. Phan, T.L., Phan, M.H., Khiem, N.V., Phuc, N.X., Yu, S.C. Study of spin dynamics, cluster glass and spin glass behaviors in La 0.5Sr0.5Co1-xFexO3 (x=0, 0.1) Journal of Magnetism and Magnetic Materials, Volume 282, November 2004, Pages 299-302 (Europe) , 2004

26. N. V. Khiem, L. V. Bau, N. X. Phuc, L. V. Hong, T. L. Phan, M. H. Phan, S. C. Yu EPR Study of Fe - doped cobalt oxides Reported in the 9thAsia-Pacific Physics Conference(9thAPPC Ha noi- 2004)Ha noi, Viet nam Oct. 25-31, 2004.

25. N. V. Khiem, L. V. Bau, D. N. H. Nam, N. M. An, L. V. Hong and N. X. Phuc Spin cluster behavior of La0.5Sr0.5Co0.8Fe0.2O3 perovskite compound Reported in The 9th Asia Pacific Physics Conference(9th APPC), Ha noi 25th-31st October 2004.

24. N.V. Khiem, L.V. Bau, N.M. An,N.X. Phucand D.N.H. Nam, "Effects of Fe Doping on Magnetic and Transport Properties of La0.5Sr0.5(Co1-xFex)O3 (0  x  0.6)", Physica B: Condensed Matter, Volume 327, Issues 2-4, April 2003, Pages 177-182 (Europe) , 2003

23. L.V. Bau ,N.V. Khiem, L.V. Hong, N.X. Phuc and D.N.H. Nam , "Magnetic phase separation of La0.7Sr0.3Co1-yMnyO3(y = 0.3 and 0.5) compounds" Communications in Physics (Vietnam), 2003

22. N. V. Khiem, L. V. Bau, N.M. An, N. X. Phuc and D. N. H. Nam Effects of Fe Doping on Magnetic and Transport Properties of La0.5Sr0.5(Co1-xFex)O3 (0  x  0.6) (© 2004 Elsevier B.V. All rights reserved.) Physica B 327, pp. 187-189, Issues 2-4, April 2003, Pages 187-189, 2003

21. N.V. Khiem, L.V. Bau, L.H. Son, D.N.H. Nam,and N.X. Phuc Influence of A-site Cation Size on Magnetic and Transport Properties of (Nd1-yYy)0.7Sr0.3MnO3 (0y0.42) Journal of Magnetism and Magnetic Materials, Volume 262, Issue 3, June 2003,Pages 490-495 (Europe) , 2003

20. L. H. Son, N. X. Phuc, N. V. Khiem, L. V. Bau, L. V. Hong, and D. N. H. Nam Investigation of phase formation kinetics and magnetic clustering in Nd0.7Sr0.3MnO3 Physica B 327, pp. 244-246, Issues 2-4, 2003

19. N. X. Phuc, L. V. Bau, N. V. Khiem, L. H. Son, D. N. H. Nam Magnetic and transport properties of La0.7Sr0.3Co1-yMnyO3, No double exchange between Mn and Co Physica B 327, pp. 177-182, 2003

18. L.V. Hong, N.C. Thuan, L.H. Son, N.X. Phuc, D.N.H. Nam, N.V. Khiem, L.V. Bau, and N.Q. Thang Magnetic and transport properties of the Nd0.7Sr0.3MnO3 ceramic Reported at 6th German-Vietnamese Seminar on Physics and Engineering, 2003

17. N. V. Khiem, D. N. H. Nam, L. V. Bau, N. M. An, N. N. Toan and N. X. Phuc Transport and magnetic diagram phase of La1-xSrxCoO3 (0<x0.5)", reported at National Conf. on in Solid State Physics, Nha trang April, 2001.Modern Problems in Solid State Physics (In Vietnam) , Sci. & Tech. Pub. House, Hanoi Vol. II-B (2003) pp. 347-354. 2003

16. N. V. Khiem, D. N. H. Nam, L. V. Bau,and N. X. Phuc Magnetic and transport properties as dependent on the average radius of the A-site cation in (Nd1-yYy)0.7Sr0.3MnO3 Proceedings of the 5thVietnamese-German Seminar on Physics and Engineering, Hue City, pp. 161-164. 2002

15. D.N.H. Nam, K. Jonason, P. Nordblad, N.V. Khiem, and N.X. Phuc Coexistence of Ferromagnetism and Glassy Behavior in the La0.5Sr0.5CoO3 Perovskite Compound PHYSICAL REVIEW B, 59(6), pp. 4189-4194 (USA) 2001

14. D.N.H. Nam, R. Mathieu, P. Nordblad,N.V. Khiem, and N.X. Phuc Effects of Mg-doping in Nd0.7Sr0.3Mn1-yMgyO3 (y0.3) Journal of Magnetism and Magnetic Materials, 226-230, pp. 1340-1342, (Europe) , () 2001

13. N.X. Phuc, N.V. Khiem and D.N.H. Nam Field dependence of zero field cooled magnetization of La1-xSrxCoO3 Journal of Magnetism and Magnetic Materials 242–245, pp. 754–756, (Europe), 2001

12. N.V.Khiem, D. N. H. Nam, N. X. Phuc, and N. N. Toan Influence of annealing time on the magnetic properties of La0.8Sr0.2CoO3 compound Journal of Magnetism and Magnetic Materials, 226-230, pp. 1359-1361, (Europe) , 2001

11. N. V. Khiem, N. X. Phuc, N. M. An, L. V. Bau, and D. N. H. Nam Investigations of magnetic and electronic properties of A-site and B-site the 6¬th Asian Science and Technology Week, Brunei, September 12nd-21st, 2001

10. D.N.H. Nam, R. Mathieu, P. Nordblad,N.V. Khiem, and N.X. Phuc Magnetic aging and non-equilibrium dynamics in Y0.7Ca0.3MnO3
Journal of Magnetism and Magnetic Materials, 226-230, pp. 1335-1337, (Europe) , 2001

9. D.N.H. Nam, R. Mathieu, P. Nordblad, N.V. Khiem, and N.X. Phuc Magnetic properties of the Y0.7Ca0.3MnO3
Communications in Physics (Vietnam), 11(1), pp. 16-29, 2001

8. N. V. Khiem, D. N. H. Nam, L. V. Bau, L. V. Hong, N. M. Hong, N. M. An and N. X. Phuc Paramagnetic State Resistivity of Nd0.7Sr0.3Mn1-yMgyO3 (0  y  0.1) Communications in Physics (Vietnam), 11(4), pp. 245-249 2001

7. D.N.H. Nam, N.X. Phuc, N.N. Toan, N.V. Khiem, R. Mathieu and P. Nordblad Spin-Clustering and Glassy Behaviour in Some Cobaltites and Manganites" Advances in Natural Sciences (Vietnam), 2(2), pp. 27-69, 2001

6. D.N.H. Nam, R. Mathieu, P. Nordblad, N.V. Khiem, and N.X. Phuc Ferromagnetism and frustration in Nd0.7Sr0.3MnO3 PHYSICAL REVIEW B, 62(2), pp. 1027-1032 (USA), 2000

5. R. Mathieu, P. Nordblad, D.N.H. Nam, N.X. Phuc, and N.V. Khiem Short range ferromagnetism and spin glass state in Y0.7Ca0.3MnO3 PHYSICAL REVIEW B, 63(17), pp. 174405(1-6) (USA), 2000

4. D.N.H. Nam, R. Mathieu, P. Nordblad, N.V. Khiem, and N.X. Phuc Spin-Glass dynamics of La0.95Sr0.05CoO3 PHYSICAL REVIEW B, 62(3), pp. 8989-8995 (USA) 2000

3. D.N.H. Nam, N.V. Khiem, N.N. Toan, and N.X. Phuc Magnetic Properties of La0.5Sr0.5CoO3Perovskite Compound",
Communications in Physics (Vietnam), 8(4), pp. 223-230. 1999

2. D.N.H. Nam, N.X. Phuc, N.V. Khiem, R. Mathieu, and P. Nordblad Temperature Memory Effect in La0.5Sr0.5CoO3 Compound Communications in Physics (Vietnam) 9(3), pp. 129-136, 1999

1. N. V. Khiem, P. T. Phong, N. H. Manh, V. V. Hung, L. V. Hong and N. X. Phuc INFLUENCE OF SINTERING TEMPERATURE ON LOW-FIELD SPIN-POLARIZED TUNNELING MAGNETORESISTANCE OF La0.7Ca0.3MnO3 Communacation in Physics (Vietnam) 1998

ii M. Tseggai, R. Mathieu, P. Nordblad, R. Tellgren, L. V. Bau, D. N. H. Nam, N. X. Phuc, N. V. Khiem, G. Andre’, and F. Boure’e Magnesium substitution in Nd0.7Sr0.3MnO3 J. Solid State Chem. 177, pp. 966-971, 1997

i Nguyen Van Khiem,Nguyen Xuan Phuc, Le Van Hong, Le Viet Bau and Dao Nguyen Hoai Nam Phase separation and existance magnetic-glass state in perovskite La1-xSrx(Co1-yMy)O3 with M=Mn and Fe The modern problems of Solid state (Vietnam), PartIII-A, pp. 3-11. 1997