The critical layer number of Stranski–Krastanov growth mode epitaxial growth for bcc metallic thin films

The effects of several surfactants on the homoepitaxial and heteroepitaxial growth of metallic films and multilayers have been studied and compared. Our measurements clearly revealed that pre-deposition of a small amount of surfactant prior to the adatom deposition changed thin film growth mode and structure. The pre-deposited surfactant enhanced layer-by-layer (LBL) growth of the homoepitaxial and heteroepitaxial growth of metallic films. The surfactant also enhanced the epitaxial growth of metallic multilayer.

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Scanning Tunneung Microscope Studies of Initial Epitaxial Growth of YBa2Cu3O7-δ Thin Films

MRS Proceedings ◽

10.1557/proc-263-41 ◽

1992 ◽

Vol 263 ◽

Cited By ~ 5

Author(s):

Xiang-Yang Zheng ◽

D. H. Lowndes ◽

Shen Zhu ◽

R. J. Warmack

Keyword(s):

Thin Films ◽

Epitaxial Growth ◽

Growth Temperature ◽

Lattice Mismatch ◽

Growth Mode ◽

Scanning Tunneling ◽

Tunneling Microscopy ◽

Weber Type ◽

Film Substrate ◽

Miscut Angle

ABSTRACTThe initial stages of epitaxial growth of laser ablated YBa2Cu3O7-δ (YBCO) thin films on (001) SrTiO3, LaAlO3, and MgO substrates, and on slightly miscut LaA1O3 and SrTiO3, have been studied with scanning tunneling microscopy (STM). Surface images show that the initial YBCO growth mode can be either of the Stranski- Krastanov or the Volmer-Weber type, depending on the film-substrate lattice mismatch and the growth temperature. A small substrate miscut angle is found to strongly influence the growth mode of YBCO films. Screw dislocation-mediated growth is suppressed, and films grown at 800°C on (001) LaAlO3 substrates with miscut angle of 2.0° along <100> or <110> directions were found to consist of tilted platelets that are epitaxially aligned with the substrate crystal lattice.

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Mesoscopic Materials. Epitaxial Growth and Electronic Properties of Metallic Thin Films and Multilayers.

Materia Japan ◽

10.2320/materia.34.946 ◽

1995 ◽

Vol 34 (8) ◽

pp. 946-951

Author(s):

Masahiko Yamamoto ◽

Kouichi Nishikawa ◽

Toshiki Kingetsu

Keyword(s):

Thin Films ◽

Electronic Properties ◽

Epitaxial Growth ◽

Metallic Thin Films

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Rocking Beam Microarea Diffraction Applied to Metallic thin Films

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100091962 ◽

1976 ◽

Vol 34 ◽

pp. 396-397

Author(s):

R. H. Geiss

Keyword(s):

Thin Films ◽

Electron Diffraction ◽

Small Area ◽

Objective Lens ◽

Electron Optics ◽

Metallic Thin Films ◽

Transmission Electron Diffraction ◽

Transmission Electron ◽

Sample Height ◽

Scanning Transmission

The theory and practical limitations of micro area scanning transmission electron diffraction (MASTED) will be presented. It has been demonstrated that MASTED patterns of metallic thin films from areas as small as 30 Åin diameter may be obtained with the standard STEM unit available for the Philips 301 TEM. The key to the successful application of MASTED to very small area diffraction is the proper use of the electron optics of the STEM unit. First the objective lens current must be adjusted such that the image of the C2 aperture is quasi-stationary under the action of the rocking beam (obtained with 40-80-160 SEM settings of the P301). Second, the sample must be elevated to coincide with the C2 aperture image and its image also be quasi-stationary. This sample height adjustment must be entirely mechanical after the objective lens current has been fixed in the first step.

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Epitaxial Growth of Sr0.3Ba0.7Nb2O6 Thin Films Prepared by Sol-Gel Process

MRS Proceedings ◽

10.1557/proc-606-181 ◽

1999 ◽

Vol 606 ◽

Cited By ~ 2

Author(s):

Keishi Nishio ◽

Jirawat Thongrueng ◽

Yuichi Watanabe ◽

Toshio Tsuchiya

Keyword(s):

Thin Film ◽

Thin Films ◽

Epitaxial Growth ◽

Raw Materials ◽

Substrate Surface ◽

Sol Gel ◽

Tungsten Bronze ◽

Monomethyl Ether ◽

Tetragonal Tungsten Bronze ◽

Sol Gel Process

AbstructWe succeeded in the preparation of strontium-barium niobate (Sr0.3Ba0.7Nb2O6 : SBN30)that have a tetragonal tungsten bronze type structure thin films on SrTiO3 (100), STO, or La doped SrTiO3 (100), LSTO, single crystal substrates by a spin coating process. LSTO substrate can be used for electrode. A homogeneous coating solution was prepared with Sr and Ba acetates and Nb(OEt)5 as raw materials, and acetic acid and diethylene glycol monomethyl ether as solvents. The coating thin films were sintered at temperature from 700 to 1000°C for 10 min in air. It was confirmed that the thin films on STO substrate sintered above 700°C were in the epitaxial growth because the 16 diffraction spots were observed on the pole figure using (121) reflection. The <130> and <310> direction of the thin film on STO were oriented with the c-axis in parallel to the substrate surface. However, the diffraction spots of thin film on LSTO substrate sintered at 700°C were corresponds to the expected pattern for (110).

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