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Surface configurations during annealing of sputter-deposited NiTi thin films

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Chinese science Bulletin 1997年第23期42卷 2019-2020页

作者： GONG Fengfei, JIANG Enyong, SHEN Huimin and WANG Yening1. Department of Applied Physics, Tianjin university, Tianjin 3.0072 The national laboratory of {3. state microstructures, nanjing university, nanjing 210008 center for advanced studies in science and technology of microstructures, nanjing 2.0093. china.2. Department of Physics, Tianjin university, Tianjin 3.0072, china.3. national laboratory of solid state microstructures, nanjing university, nanjing 210008, center for advanced studies in science and technology of microstructures, nanjing 2.0093. china. Department of Applied Physics Tianjin University Tianjin The national laboratory of solid {3. microstructures Nanjing University Nanjing center for advanced studies in {3. and technology of microstructures Nanjing China Department of Physics Tianjin University Tianjin China national laboratory of solid {3. microstructures Nanjing University Nanjing

SPUTTER-DEPOSITED NiTi thin films are becoming more and more important because of their po-tential applications to the intelligent thin-film systems. The as-deposited NiTi thin films pre-pared by magnetron sputtering are generally amorphous. Because the amorphous NiTi thinfilms cannot show shape memory effect, they should be crystallized under appropriate anneal-

关键词： NiTi Surface configurations during annealing of sputter-deposited NiTi thin films

Study on the Relationship between Lamellar Spacing and Growth Rate inthe Regular Eutectic Growthby Monte-Carlo Simulation

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Journal of Materials science & technology 2002年第4期18卷 322-324页

作者： Weimin WANG, Junming LIU and Zhiguo LIUlaboratory of solid state {3., nanjing university, nanjing 2.0093. china Lab. of solid state microstructures Nanjing Univ. Nanjing 210093 China

A modified Monte-Carlo(MC) method to simulate the regular growth of binary eutectic alloys is presented. It is found that the growth rate has a linear dependence on the chemical potential difference between the solid and liquid; the relation between the lamellar spacing A and growth rate R accords well with the prediction of Jackson-Hunt(JH) theory unless the growth rate is very low.

关键词： Eutectic Monte-Carlo simulation Growth

HARMONIC RESPONSE AND FLUX CREEP OF SUPERCONDUCTOR

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南京大学学报(自然科学) 1999年第5期 634-635页

作者： Ding Shiying (Department of Physics,national laboratory of solid {3. microstructures,nanjing university, center for Advance studies in science and technology of microstructures,2.0093.nanjing, PRC)

ＨａｒｍｏｎｉｃＡＣｓｕｓｃｅｐｔｉｂｉｌｉｔｉｅｓａｓａｆｕｎｃｔｉｏｎｏｆｔｅｍｐｅｒａｔｕｒｅ（Ｔ），ＡＣｆｉｅｌｄｆｒｅｑｕｅｎｃｙ（ｆ），ａｍｐｌｉｔｕｄｅ（Ｂａｃ）ｉｎＤＣｆｉｅｄｌｄ（Ｂｄｃ）ｈａｖｅ... 详细信息

ＨａｒｍｏｎｉｃＡＣｓｕｓｃｅｐｔｉｂｉｌｉｔｉｅｓａｓａｆｕｎｃｔｉｏｎｏｆｔｅｍｐｅｒａｔｕｒｅ（Ｔ），ＡＣｆｉｅｌｄｆｒｅｑｕｅｎｃｙ（ｆ），ａｍｐｌｉｔｕｄｅ（Ｂａｃ）ｉｎＤＣｆｉｅｄｌｄ（Ｂｄｃ）ｈａｖｅｂｅｅｎｓｔｕｄｉｅｄｎｕｍｅｒｉｃａｌｌｙ．Ｔｈｅｎｕｍｅｒｉｃａｌｃａｌｃｕｌａｔｉｏｎｉｓｂａｓｅｄｏｎｎｏｎｌｉｎｅａｒｖｏｒｔｅｘｄｉｆｆｕｓｉｏｎ．Ｔｈｅｒｅｓｕｌｔｓｈｏｗｓｔｈａｔｔｈｅｒｅｅｘｉｓｔｓｓｅｃｏｎｄｈａｒｍｏｎｉｃａｌｔｈｏｕｇｈｖｅｒｙｗｅａｋｗｈｉｌｅｔｈｉｒｄｈａｒｍｏｎｉｃｉｓｓｔｒｏｎｇ．ＴｈｅｌｏｃａｔｉｏｎｏｆｔｈｉｒｄｈａｒｍｏｎｉｃｓｈｉｆｔｓｔｏｗａｒｄｌｏｗｔｅｍｐｅｒａｔｕｒｅｗｈｉｌｅｉｔｓｈｅｉｇｈｔｉｎｃｒｅａｓｅｓｗｉｔｈｅｉｔｈｅｒｄｅｃｒｅａｓｉｎｇｆｏｒｉｎｃｒｅａｓｉｎｇＢａｃ．ＴｈｅｓｅｎｕｍｅｒｉｃａｌｒｅｓｕｌｔｓａｒｅｉｎａｇｒｅｅｍｅｎｔｗｅｌｌｗｉｔｈｅｘｐｅｒｉｍｅｎｔａｌｏｂｓｅｒｖｅｄｆｏｒｔｅｘｔｕｒｅｄＹＢａ２Ｃｕ３Ｏ７ａｎｄｉｎｃｏｎｔｒａｓｔｗｉｔｈｐｒｅｄｉｃｔｉｏｎｏｆｔｈｅＢｅａｎｃｒｉｔｉ...

关键词： ac susceptibility superconductivity harmonics

Interfacial Tunnel-type GMR in Granular PerovskiteLa_(1-x)Sr_xMnO_3

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Journal of Materials science & technology 1999年第4期15卷 373-374页

作者： Ning ZHANG and Minyu ZENG(Department of Physics, nanjing Normal university, nanjing 210097, {3.WeiPing DING, Wei ZHONG and Youwei DU(national laboratory of solid state microstructures, nanjing university, nanjing 2.0093. china.To whom correspondence sh Department of Physics Nanjing Normal University Nanjing 210097 China national laboratory of solid {3. microstructures Nanjing University Nanjing 210093 China

The spin-dependent intedecial tunneling and the corresponding tunnef-type magnetoresistance (TMR) have been observed in granular perovskite La_(1-x)Sr_xMnO_3.with x from 0.05 to *** shows that the intedecial tunneling originates from the magnetic difference between thegrain core and the sudece, and the TMR stems from the field-induced change of magnetic orderin the interface.

关键词： Sr x)SrxMnO3 MnO GMR Interfacial Tunnel-type GMR in Granular PerovskiteLa type

THE　ANISOTROPY　OF　FLUX　DYNAMICS　FOR　YBa2Cu3.7

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南京大学学报(自然科学) 1996年第4期 138-139页

作者： Ding Shiying Ren Cong Yi Huajun (Department of Physics,national laboratory of solid {3. microstructures,and center for advanced studies in science and technology of microstructures,nanjing university,nanjing ,2.0093.PRC)

ＴＨＥＡＮＩＳＯＴＲＯＰＹＯＦＦＬＵＸＤＹＮＡＭＩＣＳＦＯＲＹＢａ２Ｃｕ３Ｏ７ＤｉｎｇＳｈｉｙｉｎｇＲｅｎＣｏｎｇＹｉＨｕａｊｕｎ（ＤｅｐａｒｔｍｅｎｔｏｆＰｈｙｓｉｃｓ，ＮａｔｉｏｎａｌＬａｂｏｒａｔｏｒｙｏｆＳ... 详细信息

ＴＨＥＡＮＩＳＯＴＲＯＰＹＯＦＦＬＵＸＤＹＮＡＭＩＣＳＦＯＲＹＢａ２Ｃｕ３Ｏ７ＤｉｎｇＳｈｉｙｉｎｇＲｅｎＣｏｎｇＹｉＨｕａｊｕｎ（ＤｅｐａｒｔｍｅｎｔｏｆＰｈｙｓｉｃｓ，ＮａｔｉｏｎａｌＬａｂｏｒａｔｏｒｙｏｆＳｏｌｉｄＳｔａｔｅＭｉｃｒｏｓｔｒ...

关键词： anisotropy flux creep YBa 2Cu 3. 7 ac susceptibility

Preparation and Characterization of Nanocomposite MgFe_2O_4/SiO_2

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Journal of Wuhan university of technology(Materials science) 2009年第3期24卷 354-358页

作者：徐莉 College of science Nanjing Forestry University

Nanocomposites MgFe2O4/SiO2 were successfully synthesized by the sol-gel method in the presence of N, N-dimethylformamide （DMF）. The formation of pure MgFe2O4 was confirmed by powder X-ray diffraction （XRD） and electron diffraction. The structural evolution of MgFe2O4 nanocrystals was followed by powder X-ray diffraction and IR absorption spectroscopy. The formation of spinel structure of MgFe2O4 started at 800 ℃, and completed at 900 ℃, The transmission electron microscopy （TEM） measurements suggest that the particle sizes increase with the increasing annealing temperature, and the mean particle sizes of the spherical samples annealed at 800 ℃, 900 ℃ and 1 050 ℃ are ca. 3.nm, 8 nm and 11 nm, respectively. Magnetization measurements at room temperature and 78 K indicate supemaramagnetic nature of these MgFe2O4 nanocrvstals.

关键词： nanocomposite sol-gel magnesium ferrite magnetic property

Special magnetic phenomena in heavily doped La_(0.7-x)Dy_xSr_(0.3.MnO_3.system

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science china.Physics,Mechanics & Astronomy) 2008年第1期51卷 90-97页

作者： LIU Ning 1,2 ,YAN GuoQing 1,3.,CAI ZhiRang 1 ,PI Li 2 ,ZHANG Bei 2 &TONG Wei 2 1 Department of Physics,Suzhou College,Suzhou 23.000,china.2 Structure Research laboratory,university of {3. and technology of china.Hefei 23.026,china.3.national laboratory of solid state microstructures,Physics Department,nanjing university,nanjing 2.0093.china Department of Physics Suzhou College Suzhou China Structure Research laboratory University of Science and Technology of China Hefei China national laboratory of solid {3. microstructures Physics Department Nanjing University Nanjing China

The magnetism in heavily Dy doped La0.7-xDyxSr0.3.nO3.0.40≤x≤0.70)system is studied in this *** M-T relation seems to be complicated with the increase of *** sample with x=0.40,AFM behavior exists at T≤TN and M-T curves under zero field cooling(ZFC)and field cooling(FC)exhibit typical behavior of spincluster glass state above *** the sample with x=0.50,the M-T curve under ZFC exhibits a valley at a low temperature while the M-T curve under FC exhibits the negative magnetization below *** samples with x=0.60,0.70,their ZFC M-T curves are similar to that of x=0.50,but the FC M-T curves do not exhibit negative values any *** the peculiar phenomena above are well explained by Néel double-lattice model combined with M-H relation at typical *** molecular field theory fits well the negative magnetization for x=0.50.

关键词： heavily doped special magnetic phenomena double-lattice model

PERIODIC DOMAIN INVERSION IN LiTaO3.BY APPLYING AN EXTERNAL PULSED FIELD

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南京大学学报(自然科学) 1995年第1期 174-175页

作者： Zhu Shining Zhu Yongyuan Zhu Yuzhen Yang zhen Kang Ning Ye Chen Ming Naiben(national laboratory of solid {3. microstructures,nanjing university, center for Advance studies in science and technology of microstructures, 2.0093. nanjing, PRC)

ＰＥＲＩＯＤＩＣＤＯＭＡＩＮＩＮＶＥＲＳＩＯＮＩＮＬｉＴａＯ３ＢＹＡＰＰＬＹＩＮＧＡＮＥＸＴＥＲＮＡＬＰＵＬＳＥＤＦＩＥＬＤ￥ＺｈｕＳｈｉｎｉｎｇ；ＺｈｕＹｏｎｇｙｕａｎ；ＺｈｕＹｕｚｈｅｎ；Ｙａｎｇｚｈｅｎ；Ｋａｎ... 详细信息

ＰＥＲＩＯＤＩＣＤＯＭＡＩＮＩＮＶＥＲＳＩＯＮＩＮＬｉＴａＯ３ＢＹＡＰＰＬＹＩＮＧＡＮＥＸＴＥＲＮＡＬＰＵＬＳＥＤＦＩＥＬＤ￥ＺｈｕＳｈｉｎｉｎｇ；ＺｈｕＹｏｎｇｙｕａｎ；ＺｈｕＹｕｚｈｅｎ；Ｙａｎｇｚｈｅｎ；ＫａｎｇＮｉｎｇ；ＹｅＣｈｅｎ；Ｍｉｎ?..

关键词： LiTaO3 Periodic domain inversion External pulsed field

INSTABILITY OF HEXAGONAL CRYSTALS IN LIPID MONOLAYERS

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南京大学学报(自然科学) 1996年第3期 530-531页

作者： Sun Cheng Wang Mu Jan Van Esch Ming Naiben Pier Bennema Helmut Ringsdrot R. J. M. Nolte(national laboratory of solid {3. microstructures, nanjing university, 2.0093. nanjing, PRC& center for advanced studies of science and technology of microstructures

ＩＮＳＴＡＢＩＬＩＴＹＯＦＨＥＸＡＧＯＮＡＬＣＲＹＳＴＡＬＳＩＮＬＩＰＩＤＭＯＮＯＬＡＹＥＲＳ￥ＳｕｎＣｈｅｎｇ；ＷａｎｇＭｕ；ＪａｎＶａｎＥｓｃｈ；ＭｉｎｇＮａｉｂｅｎ；ＰｉｅｒＢｅｎｎｅｍａ；ＨｅｌｍｕｔＲｉｎｇ... 详细信息

ＩＮＳＴＡＢＩＬＩＴＹＯＦＨＥＸＡＧＯＮＡＬＣＲＹＳＴＡＬＳＩＮＬＩＰＩＤＭＯＮＯＬＡＹＥＲＳ￥ＳｕｎＣｈｅｎｇ；ＷａｎｇＭｕ；ＪａｎＶａｎＥｓｃｈ；ＭｉｎｇＮａｉｂｅｎ；ＰｉｅｒＢｅｎｎｅｍａ；ＨｅｌｍｕｔＲｉｎｇｓｄｒｏｔ；Ｒ．Ｊ．Ｍ．Ｎｏｌｔｅ...

关键词： instability two-dimensional crystal growth