All issues
Volume 4, Issue 11
Displaying 1-7 of 7 articles from this issue
- |<
- <
- 1
- >
- >|
-
Tsukasa SAWAKI1961 Volume 4 Issue 11 Pages 437-452
Published: November 20, 1961
Released on J-STAGE: September 29, 2009
JOURNAL FREE ACCESSDownload PDF (2788K) -
Mitsuo FURUKOSHI1961 Volume 4 Issue 11 Pages 453-458
Published: November 20, 1961
Released on J-STAGE: September 29, 2009
JOURNAL FREE ACCESSDownload PDF (939K) -
Hideo SHIMURA1961 Volume 4 Issue 11 Pages 459-466
Published: November 20, 1961
Released on J-STAGE: September 29, 2009
JOURNAL FREE ACCESSDownload PDF (1309K) -
Keiichi MATANO1961 Volume 4 Issue 11 Pages 467-469
Published: November 20, 1961
Released on J-STAGE: September 29, 2009
JOURNAL FREE ACCESSDownload PDF (474K) -
Kazuo HARA1961 Volume 4 Issue 11 Pages 470-473
Published: November 20, 1961
Released on J-STAGE: September 29, 2009
JOURNAL FREE ACCESSDownload PDF (582K) -
Pt. I. A high vacuum evaporation apparatus for semicontinuous preparation of ferromagnetic thin filmsHiroshi ISHII, Akio ITO1961 Volume 4 Issue 11 Pages 474-482
Published: November 20, 1961
Released on J-STAGE: September 29, 2009
JOURNAL FREE ACCESSA high vacuum evaporation apparatus for semicontinuous preparation of ferromagnetic thin films is described, which consists of a operation chamber and its associated vacuum system. The vacuum chamber, 300mm (inner dia.) ×800m.rn. mild steel Tee, has a door flange on each side and contains the demountable operating system, having a store-box for non-treated samples, driving mechanism, magnets, ovens-for outgassing, heating on evaporation and annealing samples-, reservoir for finished samples, a evaporation source, and etc. on a base frame provided with four wheels.
And, all operations are manipulated by vacuum sealed driving-shafts inserted in each adaptor.
The glass substrate fixed on a holder is put on the chain conveyer from the store-box and moved place by place and subjected to the serial treatment processes, i. e., outgassing, deposition, and annealing at each position and finally sent into the sample reservoir. Ten substrate holders or more can be charged in the store-box and two samples can be prepared at the same time under same conditions in every case.
The pressure during each operation except for the evaporation can be maintained at 57×10-6 Torr.
The pressure during evaporation is usually kept between 13×10-5Torr and can be reduced further to 56×10-6Torr by applying a liquid air cold trap.
The demountable operating system and its each part is described in detail.
The pumping system consists of a rotary pump (500l/min) and a three-stages oil diffusion pump with water-cooling baffle.View full abstractDownload PDF (1710K) -
Pt. II Evaporation of permalloy thin filmsKeiichi MATANO, Akio ITO, Hiroshi ISHII1961 Volume 4 Issue 11 Pages 482-488
Published: November 20, 1961
Released on J-STAGE: September 29, 2009
JOURNAL FREE ACCESSPreparation of 80-20 permalloy thin films has been experienced and some results of the experiment are discussed, Evaporation was carried out by means of the semi-continuous high vacuum evaporation apparatus reported formerly. The crucibles of alumina, beryllia, thoria, and zirconia were used as evaporation source, Substrate was 0.450.6mm thick slide glass for microscopy cleaned by the treatments in conc. NaOH solution and then chromic acid mixture,
Experimental conditions were as follows :
Degassing of substrate : 2hrs at 250350°C ; Evaporation : at 16004700°C, 23×10-5 Torr, the substrate temperature of 150400°C, magnetic field 250 Oe, ; Annealing : 1.52 hrs at 150400°C, 150 or 250 Oe, 2×10-6Torr,
Magnetic properties of films evaporated from.Al2O3 crucible are not stable under dry heat and dump heat ambients. In case of BeO crucible, films have fairly good characteristics.
Coersive force of films are 412 Oe and many films have two magnetization easy axes ; one is parallel and another is perpendicular to the dirction of magnetic field applied during evaporation. Switching characteristics are observed by means of destructive read-out system.View full abstractDownload PDF (1076K)
- |<
- <
- 1
- >
- >|