なかのにっき

cvs tag draft_20010804

In this work, we report on the impact of distinct growth parameters that affect the roughness and surface morphology of La2/3Ca1/3MnO3 epitaxial thin films grown by rf sputtering, namely, the film thickness and the deposition temperature. Data for films with thicknesses ranging from 2.4 to 108 nm will be presented. A correlation with transport measurements is also reported: whereas films thicker than 6 nm show the typical metal-to-insulator transition, the thinner film is insulating. The resistivity is strongly enhanced when decreasing film thickness. Nuclear magnetic resonance measurements have been used to monitor the relative concentration of the localized Mn4 + and delocalized Mn3+/4 + states. It is found that the relative intensity of the delocalized Mn3+/4+ configuration (I3+/4 + ) progressively lowers when reducing film thickness. Of significance could be the observation that I3+/4 + remains finite for the thicknesses corresponding to insulating films, thus suggesting that an electrically inhomogeneous state is formed in a region close to the interface with the substrate.

As a scalar wave is incident upon a rough surface at grazing angle, the Helmholtz wave equation can be approximated by the parabolic equation. Inverse scattering has been formulated in the form of a pair of coupled integral equations in two unknown functions, i.e., surface current and surface roughness. The aim of this article is to implement this approach for profile reconstruction of complex fractal rough surface. The fractal rough surfaces described by a band-limited Weieztrass-Mandelbrot function are numerically realized using the Monte Carlo method. As the scattering fields along a line parallel to the mean surface are measured or solved with a scalar wave incidence at low grazing angle, the rough surface profile is progressively inverted. Numerical examples show that the reconstructed profile and its parameters such as the fractal dimension, roughness variance, and correlation length are well matched with the simulated surfaces.

Molecular dynamics simulations are performed to study the fundamental role of the ion beam in determining the in-plane texture of <100> oriented (out-of-plane) MgO films during ion beam assisted deposition (IBAD). Sputter yields are determined as a function of in-plane orientation for Ar ion beams. The minimum sputter yield exists at an ion beam orientation corresponding to the MgO <110> direction. The finite width of the sputter yield minimum is attributable to two main factors: (i) only a fraction of the incident ions are oriented to travel directly down the center of the channel and (ii) ions that are not exactly parallel to the channeling direction may channel. While the simulations imply that it is possible to in-plane orient {001} MgO films using IBAD, there are fundamental limitations on the degree of ordering that can be achieved.

The Si + and O + signals, as obtained in secondary ion mass spectrometry (SIMS) analysis of silicon when using oxygen as the primary species, pass through an initial transient region before reaching the stationary state. We simulate this transient zone to check a phenomenological model for the secondary ionization of sputtered atoms. The simulation is split into two parts: the sputtering of neutrals obtained from implantation, sputtering, relocation/replacement, and diffusion, simulations and their subsequent ionization. The ionization phenomena are also described by some ad hoc fitting functions with which the SIMS measurements are better approached than with the model. The fitting functions and the model outputs are verified with experimental secondary ionization data.

apt-get install php3-pgsql postgresql

% sudo -u postgres createuser www-data
Shall the new user be allowed to create databases? (y/n) y
Shall the new user be allowed to create more new users? (y/n) n

select * from pg_user ;

% sudo -u www-data createdb www-data

LoadModule php3_module /usr/lib/apache/1.3/libphp3.so

AddType application/x-httpd-php3 .php

# chown -R www-data.www-data cudb rmdb

• 『PC UNIX ユーザのための PostgreSQL 完全攻略ガイド』石井達夫 技術評論社
• 『PHP4 徹底攻略』堀田倫英 他 ソフトバンク
• 『固体物理学演習』沼居貴陽 丸善
• 『なっとくする数理ファイナンス』森 真 講談社
• 『神がつくった究極の素粒子 上下』レーダーマン 草思社
• 『西村しのぶの神戸・元町"下山手ドレス"』西村しのぶ 角川書店
• 『てけてけマイハート1』竹本泉 竹書房

• 『モンキーパトロール 1,2』有間しのぶ 祥伝社
• 『RUSH 2』西村しのぶ 祥伝社

• DVD-ROM ドライブ
• ビデオセレクタ
• 光学マウス (バルク売りロジクールの奴 \2980x5)

apt-get install php4-pgsql

LoadModule php4_module /usr/lib/apache/1.3/libphp4.so

AddType application/x-httpd-php .php

db name www-data
db server localhost
db login  www-data
db password (empty)

IDENT authentication failed for user 'www-data'

ident   stream  tcp     wait    identd  /usr/sbin/identd        identd

/var/www/cudb/.htaccess
/var/www/cudb/env/config.inc
/var/www/cudb/env/db_info.inc

AllowOverride All

LoadModule env_module /usr/lib/apache/1.3/mod_env.so

cudb script root       /var/www/cudb
cudb env root          /var/www/cudb/env

rmdb script root        /var/www/rmdb
rmdb env root           /var/www/rmdb/env
web root                http://migrate.babalab.ap.seikei.ac.jp/rmdb
admin email             nakano@apm.seikei.ac.jp

Installation complete. Remember to remove or rename the install script install.php and move the env directory to the location you specified

Once you have moved the env directory if necessary, click here to go to the reference management database.

        List of relations
     Name      | Type  |  Owner
---------------+-------+----------
 common_users  | table | www-data
 cudb_users    | table | www-data
 modules       | table | www-data
 query         | table | www-data
 ref_abbrev    | table | www-data
 ref_bib       | table | www-data
 ref_fields    | table | www-data
 ref_type      | table | www-data
 refs          | table | www-data
 research_area | table | www-data
 rmdb_users    | table | www-data
 sess_mgmt     | table | www-data
(12 rows)