| Paper Abstract and Keywords |
| Presentation |
2016-06-09 13:50
Effect of oxide boundary materials on magnetic properties for CoPt-based granular media
Kim Kong Tham, Ryosuke Kushibiki (Tanaka Kikinzoku), Shintaro Hinata, Shin Saito (Tohoku Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
The magnetic properties and structures of Co80Pt20-30 vol% oxide (ZrO2, Cr2O3, Y2O3, Al2O3, MnO, TiO2, WO2, SiO2, Mn3O4, WO3, Co3O4, MoO3, and B2O3) granular media deposited at room temperature were investigated. As a result, the following were found. 1) By employing oxides with low melting point temperatures as the granular media, magnetic grains with high saturation magnetization (Msgrain) and perpendicular magnetic anisotropy (Kugrain) are obtained; the increases in Msgrain and Kugrain are due to the promotion of the columnar growth of magnetic grains and phase separation or two-phase precipitation between magnetic grains and oxides. 2) The increase in the Kugrain of the granular media followed by the decrease in the melting point of oxides is due to the reduction in the amount of stacking faults. 3) Among these granular media, the CoPt-B2O3 granular medium has the highest coercivity (Hc) and ratio of Hc to the magnetic anisotropy field (Hc/Hkgrain) of 8.0 kOe and 0.4, with Msgrain and Kugrain of 1115 emu/cm3 and 1.1×107 erg/cm3. 4) The CoPt-B2O3 granular medium has well-isolated and columnar growth magnetic grains with an average grain size of 6.5 nm. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Perpendicular magnetic recording / high magneto-crystalline anisotropy / CoPt-B2O3 granular medium / oxide boundary materials / melting point temperature / / / |
| Reference Info. |
ITE Tech. Rep. |
| Paper # |
|
| Date of Issue |
|
| ISSN |
|
| Download PDF |
|
| Conference Information |
| Committee |
IEICE-MRIS MMS |
| Conference Date |
2016-06-09 - 2016-06-10 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Tohoku Univ. |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Recording Systems, etc. |
| Paper Information |
| Registration To |
IEICE-MRIS |
| Conference Code |
2016-06-MR-MMS |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Effect of oxide boundary materials on magnetic properties for CoPt-based granular media |
| Sub Title (in English) |
|
| Keyword(1) |
Perpendicular magnetic recording |
| Keyword(2) |
high magneto-crystalline anisotropy |
| Keyword(3) |
CoPt-B2O3 granular medium |
| Keyword(4) |
oxide boundary materials |
| Keyword(5) |
melting point temperature |
| Keyword(6) |
|
| Keyword(7) |
|
| Keyword(8) |
|
| 1st Author's Name |
Kim Kong Tham |
| 1st Author's Affiliation |
Tanaka Kikinzoku Kogyo K. K. (Tanaka Kikinzoku) |
| 2nd Author's Name |
Ryosuke Kushibiki |
| 2nd Author's Affiliation |
Tanaka Kikinzoku Kogyo K. K. (Tanaka Kikinzoku) |
| 3rd Author's Name |
Shintaro Hinata |
| 3rd Author's Affiliation |
Tohoku Univ. (Tohoku Univ.) |
| 4th Author's Name |
Shin Saito |
| 4th Author's Affiliation |
Tohoku Univ. (Tohoku Univ.) |
| 5th Author's Name |
|
| 5th Author's Affiliation |
() |
| 6th Author's Name |
|
| 6th Author's Affiliation |
() |
| 7th Author's Name |
|
| 7th Author's Affiliation |
() |
| 8th Author's Name |
|
| 8th Author's Affiliation |
() |
| 9th Author's Name |
|
| 9th Author's Affiliation |
() |
| 10th Author's Name |
|
| 10th Author's Affiliation |
() |
| 11th Author's Name |
|
| 11th Author's Affiliation |
() |
| 12th Author's Name |
|
| 12th Author's Affiliation |
() |
| 13th Author's Name |
|
| 13th Author's Affiliation |
() |
| 14th Author's Name |
|
| 14th Author's Affiliation |
() |
| 15th Author's Name |
|
| 15th Author's Affiliation |
() |
| 16th Author's Name |
|
| 16th Author's Affiliation |
() |
| 17th Author's Name |
|
| 17th Author's Affiliation |
() |
| 18th Author's Name |
|
| 18th Author's Affiliation |
() |
| 19th Author's Name |
|
| 19th Author's Affiliation |
() |
| 20th Author's Name |
|
| 20th Author's Affiliation |
() |
| Speaker |
Author-1 |
| Date Time |
2016-06-09 13:50:00 |
| Presentation Time |
25 minutes |
| Registration for |
IEICE-MRIS |
| Paper # |
|
| Volume (vol) |
vol.40 |
| Number (no) |
|
| Page |
|
| #Pages |
|
| Date of Issue |
|
|