Refine your search:     
Report No.
 - 
Search Results: Records 1-13 displayed on this page of 13
  • 1

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

Optimization of substrate pretreatment and deposition conditions for epitaxial growth of $$beta$$-FeSi$$_2$$ film on Si(100)

Yamaguchi, Kenji; Hamamoto, Satoshi*; Hojo, Kiichi

Physica Status Solidi (C), 10(12), p.1699 - 1703, 2013/12

 Times Cited Count:0 Percentile:0.01(Nanoscience & Nanotechnology)

Effect of substrate treatment conditions, deposition temperature and deposition rate on the crystallinity of $$beta$$-FeSi$$_2$$ films formed on Si substrate was investigated. The substrates were treated with Ne$$^+$$ ion beams at room temperature and then annealed at 1073 K prior to film fabrication by means of ion beam sputter deposition (IBSD) method. Combinations of experimental parameters which promote the epitaxial relationship of $$beta$$-FeSi$$_2$$ (100) // Si (100) were defined. Complicated dependence of these experimental parameters on the film structure indicated that careful optimization of substrate treatment conditions and deposition parameters would enable to obtain $$beta$$-FeSi$$_2$$ films with excellent crystalline properties.

Journal Articles

Fabrication of highly-oriented silicide film on Si substrate treated by low-energy ion beam

Hamamoto, Satoshi*; Yamaguchi, Kenji; Hojo, Kiichi

Transactions of the Materials Research Society of Japan, 38(1), p.89 - 92, 2013/03

Journal Articles

Fabrication of highly-oriented silicide film on Si substrate treated by low-energy ion beam

Hamamoto, Satoshi*; Yamaguchi, Kenji; Hojo, Kiichi

Transactions of the Materials Research Society of Japan, 38(1), p.89 - 92, 2013/03

Semiconducting silicides, such as $$beta$$-FeSi$$_{2}$$, BaSi$$_{2}$$ and Mg$$_{2}$$Si are quite attractive for their potential as optoelectronic, photovoltaic and thermoelectric materials. Authors have shown that thin, uniform and highly-oriented $$beta$$-FeSi$$_{2}$$ films can be fabricated on Si (100) substrates with an atomically flat interface, when the substrates are pre-treated with low-energy ions. Since the use of ion beam introduces irradiation defects to the substrate and the film, semiconducting properties may be affected by such defects. Dependence of the crystalline properties of $$beta$$-FeSi$$_{2}$$films on the irradiated fluence of sputter etching (SE) of the substrate was investigated to discuss whether it is possible to obtain high crystalline $$beta$$-FeSi$$_{2}$$ thin film with very low defect concentration.

JAEA Reports

Report of investigation on malfunction of reserved shutdown system in HTTR

Hamamoto, Shimpei; Iigaki, Kazuhiko; Shimizu, Atsushi; Sawahata, Hiroaki; Kondo, Makoto; Oyama, Sunao; Kawano, Shuichi; Kobayashi, Shoichi; Kawamoto, Taiki; Suzuki, Hisashi; et al.

JAEA-Technology 2006-030, 58 Pages, 2006/03

JAEA-Technology-2006-030.pdf:10.69MB

During normal operation of High Temperature engineering Test Reactor (HTTR) in Japan Atomic Energy Agency (JAEA), the reactivity is controlled by the Control Rods (CRs) system which consists of 32 CRs (16 pairs) and 16 Control Rod Drive Mechanisms (CRDMs). The CR system is located in stand-pipes accompanied by the Reserved Shutdown System (RSS). In the unlikely event that the CRs fail to be inserted, the RSS is provided to insert B$$_{4}$$C/C pellets into the core. The RSS shall be designed so that the reactor should be held subcriticality from any operation condition by dropping in the pellets. The RSS consists of B$$_{4}$$C/C pellets, hoppers which contain the pellets, electric plug, driving mechanisms, guide tubes and so on. In accidents when the CRs cannot be inserted, an electric plug is pulled out by a motor and the absorber pellets fall into the core by gravity. A trouble, malfunction of one RSS out of sixteen, occurred during a series of the pre-start up checks of HTTR on February 21, 2005. We investigated the cause of the RSS trouble and took countermeasures to prevent the issue. As the result of investigation, the cause of the trouble was attributed to the following reason: In the motor inside, The Oil of grease of the multiplying gear flowed down from a gap of the oil seal which has been deformed and was mixed with abrasion powder of brake disk. Therefore the adhesive mixture prevented a motor from rotating.

Oral presentation

Investigation of substrate surface treatment and deposition conditions to fabricate highly-oriented $$beta$$-FeSi$$_2$$ thin film

Hamamoto, Satoshi*; Yamaguchi, Kenji; Hojo, Kiichi

no journal, , 

no abstracts in English

Oral presentation

Investigation of substrate surface treatment and deposition conditions to fabricate highly-oriented $$beta$$-FeSi$$_{2}$$ thin film

Hamamoto, Satoru*; Yamaguchi, Kenji; Hojo, Kiichi

no journal, , 

no abstracts in English

Oral presentation

Investigation of substrate surface treatment conditions to fabricate highly crystalline $$beta$$-FeSi$$_{2}$$ thin film

Hamamoto, Satoshi*; Yamaguchi, Kenji; Hojo, Kiichi

no journal, , 

no abstracts in English

Oral presentation

Fabrication of high-quality thin film of semiconducting silicide by use of ion beams

Hamamoto, Satoshi*; Yamaguchi, Kenji; Hojo, Kiichi

no journal, , 

no abstracts in English

Oral presentation

Irradiation effects on the fabrication of highly-oriented $$beta$$-FeSi$$_{2}$$ thin film using an ion beam

Hamamoto, Satoshi*; Yamaguchi, Kenji; Hojo, Kiichi

no journal, , 

no abstracts in English

Oral presentation

Effect of deposition rate on the fabrication of $$beta$$-FeSi$$_2$$ thin film by means of ion beam sputter deposition method

Hamamoto, Satoshi*; Yamaguchi, Kenji; Hojo, Kiichi

no journal, , 

no abstracts in English

Oral presentation

Exploration of sputter-etching conditions to fabricate iron silicide film with high crystal orientation

Yamaguchi, Kenji; Hamamoto, Satoshi*; Hojo, Kiichi

no journal, , 

no abstracts in English

Oral presentation

Effect of substrate cleaning with various ion beams on the fabrication of iron silicide thin film

Yamaguchi, Kenji; Hamamoto, Satoshi*; Hojo, Kiichi

no journal, , 

no abstracts in English

Oral presentation

Investigation of substrate surface treatment conditions to fabricate highly crystalline $$beta$$-FeSi$$_2$$ thin film

Hamamoto, Satoshi*; Yamaguchi, Kenji; Hojo, Kiichi

no journal, , 

no abstracts in English

13 (Records 1-13 displayed on this page)
  • 1