You need JavaScript to view this

Fiscal 1999 achievement report on regional consortium research and development project. Regional consortium research on energy in its 2nd year (Ultrahigh-density information storage component); 1999 nendo chokomitsudo storage component seika hokokusho. 2

Abstract

Important element technologies are studied for the development of a next-generation ultrahigh-density hard disk drive. In this research, an active head arm is experimentally built, and tested for its serviceability and feasibility. In the development of a strain sensor, a megnetostrictive thin film with a very fine structure is manufactured and, by the application of a high-frequency carrier current through the film, sensitivity more than 10 times higher than that of a semiconductor strain gage is achieved. A PZT (piezoelectric transducer) actuator is attached to a head arm available on the market, and the assembly is tested for follow-up control characteristics. It is found that a Co-Ge constitution exhibits an excellent performance even when the amount of Ge is increased to 12at%. It is found also that there is a relatively large domain, with CoCr{sub 5}Ge{sub 10} at the middle, where compound constitution is thermally stable. In the development of materials for an ultrasmooth substrate, the mean value and standard deviation of the magnetic crystal grain diameter are reduced to 7.6nm and 2.3nm, respectively, by using the dry etching process after the formation of a CrW{sub 54} seed layer. (NEDO)
Authors:
"NONE"
Publication Date:
Mar 01, 2000
Product Type:
Technical Report
Report Number:
JP-NEDO-010016024
Resource Relation:
Other Information: PBD: Mar 2000
Subject:
42 ENGINEERING; MEMORY DEVICES; MAGNETIC DISKS; STRAIN GAGES; THIN FILMS; SEMICONDUCTOR DEVICES; SENSITIVITY; PERFORMANCE; ACTUATORS; CRYSTALS; GRAIN SIZE
OSTI ID:
20140124
Research Organizations:
New Energy and Industrial Technology Development Organization, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
TRN: JN0041513
Availability:
Available to ETDE participating countries only(see www.etde.org); commercial reproduction prohibited; OSTI as DE20140124
Submitting Site:
NEDO
Size:
158 pages
Announcement Date:

Citation Formats

Fiscal 1999 achievement report on regional consortium research and development project. Regional consortium research on energy in its 2nd year (Ultrahigh-density information storage component); 1999 nendo chokomitsudo storage component seika hokokusho. 2. Japan: N. p., 2000. Web.
Fiscal 1999 achievement report on regional consortium research and development project. Regional consortium research on energy in its 2nd year (Ultrahigh-density information storage component); 1999 nendo chokomitsudo storage component seika hokokusho. 2. Japan.
2000. "Fiscal 1999 achievement report on regional consortium research and development project. Regional consortium research on energy in its 2nd year (Ultrahigh-density information storage component); 1999 nendo chokomitsudo storage component seika hokokusho. 2." Japan.
@misc{etde_20140124,
title = {Fiscal 1999 achievement report on regional consortium research and development project. Regional consortium research on energy in its 2nd year (Ultrahigh-density information storage component); 1999 nendo chokomitsudo storage component seika hokokusho. 2}
abstractNote = {Important element technologies are studied for the development of a next-generation ultrahigh-density hard disk drive. In this research, an active head arm is experimentally built, and tested for its serviceability and feasibility. In the development of a strain sensor, a megnetostrictive thin film with a very fine structure is manufactured and, by the application of a high-frequency carrier current through the film, sensitivity more than 10 times higher than that of a semiconductor strain gage is achieved. A PZT (piezoelectric transducer) actuator is attached to a head arm available on the market, and the assembly is tested for follow-up control characteristics. It is found that a Co-Ge constitution exhibits an excellent performance even when the amount of Ge is increased to 12at%. It is found also that there is a relatively large domain, with CoCr{sub 5}Ge{sub 10} at the middle, where compound constitution is thermally stable. In the development of materials for an ultrasmooth substrate, the mean value and standard deviation of the magnetic crystal grain diameter are reduced to 7.6nm and 2.3nm, respectively, by using the dry etching process after the formation of a CrW{sub 54} seed layer. (NEDO)}
place = {Japan}
year = {2000}
month = {Mar}
}