All issues
Volume 16, Issue 1
Displaying 1-6 of 6 articles from this issue
- |<
- <
- 1
- >
- >|
-
Mitsuaki NISHIJIMA, Toshio MUROTANI1973 Volume 16 Issue 1 Pages 1-8
Published: January 20, 1973
Released on J-STAGE: September 04, 2009
JOURNAL FREE ACCESSDownload PDF (1285K) -
Masatoshi ONO, Yutaka TUZI1973 Volume 16 Issue 1 Pages 9-21
Published: January 20, 1973
Released on J-STAGE: January 22, 2010
JOURNAL FREE ACCESSDownload PDF (1734K) -
Toru KANAJI, Kozo ASANO, Saburo NAGATA1973 Volume 16 Issue 1 Pages 22-27
Published: January 20, 1973
Released on J-STAGE: September 04, 2009
JOURNAL FREE ACCESSThe orientation and the surface structure of the epitaxially grown iron film is studied by a four grid type LEED-AES system. The substrate of MgO (001) surface is prepared by cleaving in air and heating in ultra high vacuum (5 × 10-9 Torr) at 500°C. No contaminant is detected by AES from this surface.
Iron atoms are evaporated from an iron wire (99.95%) which is heated by electric current directly, and the film grows epitaxially on the surface. The orientations of the film decided by LEED are denoted as
(001) Fe// (001) MgO
[100] Fe // [110] MgO
When the substrate is kept at room temperature, the surface of deposited film offeres fuzzy spots in LEED, and they become sharp by annealing. As the annealing temperature is kept below 400 °C, only small amounts of carbon and oxygen are detected and the P (1 × 1) pattern is maintained. But when it is higher than 500°C, a distinctive peak of sulphur appears in AES curve and the pattern indicates that the C (2× 2) -S structure is formed. By the heating in the oxygen atomosphere (1 × 10-9 Torr) at 500°C. the sulphur peak vanishes away.View full abstractDownload PDF (6592K) -
Tadao MIURA, Yutaka TUZI1973 Volume 16 Issue 1 Pages 28-32
Published: January 20, 1973
Released on J-STAGE: September 04, 2009
JOURNAL FREE ACCESSAn atomically clean surface of molybdenum (110) has been produced by the successive treatments of chemical reaction and high temperature heating. Carbon contamination is removed from the surface by heating the crystal to 14001500°C in 10-610-7 Torr of oxygen. The crystal is then cleaned by flashing to the same temperature in ultrahigh vacuum. The high-temperature heating for a long time for removal of oxide causes segregation of carbon to the surface. Therefore, it is necessary to heat the crystal to a high temperature in 10-4Torr of hydrogen in order to remove all adsorbed oxygen. The surface obtained is observed by LEED and Auger electron spectroscopy (AES) at a pressure of 10-10 Torr. After the cleaning procedures mentioned above, the LEED pattern expected from the bulk structure is obtained and the Auger peak heights of carbon and oxygen are extremely reduced. The LEED pattern expected from the bulk structure is also observed on the surface with small amounts of carbon and oxygen, that is, the surface which is not atomically clean. The results reported here show that the observation of the surface by LEED is unreliable as characterization of atomically clean surface of molybdenum, but AES with LEED observation seems to be much reliable technique for the purpose.View full abstractDownload PDF (5391K) -
Masatoshi ONO1973 Volume 16 Issue 1 Pages 33-38
Published: January 20, 1973
Released on J-STAGE: January 22, 2010
JOURNAL FREE ACCESSThe fundamental effects of retarding potential modulation on sensitivity and resolution of the analyzer were studied. The intensity and peak width of a Gaussian peak were numerically calculated for a wide range of modulation amplitude, assuming an ideal retarding field analyzer. Instrumental effects of spherical grids in the analyzer was also examined.View full abstractDownload PDF (954K) -
Kuntatsu LYO, Souji KOMIYA1973 Volume 16 Issue 1 Pages 41-44
Published: January 20, 1973
Released on J-STAGE: September 04, 2009
JOURNAL FREE ACCESSDownload PDF (1201K)
- |<
- <
- 1
- >
- >|