成果報告書詳細
管理番号100013726
タイトル*平成20年度中間年報 平成20年度超高密度ナノビット磁気記録技術の開発(グリーンITプロジェクト)
公開日2009/4/24
報告書年度2008 - 2008
委託先名株式会社日立グローバルストレージテクノロジーズ 富士通株式会社 株式会社日立製作所
プロジェクト番号P08010
部署名電子・情報技術開発部
和文要約以下本編抜粋:研究開発項目1「超高密度ナノビット磁気媒体技術の研究開発」(1)ナノビット微細加工技術の研究開発(富士通株式会社、株式会社日立製作所)富士通株式会社・基板引き上げ法で微小粒子を配列させ、その粒子をテンプレートとしてモールドを作製する新しい微細加工手段の検討を開始し、微細モールド作製に対する課題を抽出した。
英文要約Title: Development of Nanobit Technology for Ultra-high Density Magnetic Recording (Green IT Project) FY2008 Annual Report This project aims to establish ultra-high density magnetic recording technology, which leads to reducing the number of HDDs installed in a data center. The project covers all the key technologies for ultra high-density HDD, such as media, head and addressing technologies. The developed elemental technologies will be integrated and the feasibility will be demonstrated by the end of the project. The results of the research in fiscal year 2008 are as follows. (1) Ultra-high density nano-bit media: Nano-particle alignment method was studied as a precise mold fabrication process, and its technical gaps are abstracted. Required specifications for process tools such as rotary EB are experimentally evaluated. Pulsed magnetic filed application tool was introduced to evaluate local dynamic magnetic properties of the media. As a high Ku media L10-CoPt ordered alloy was studied. Low temperature media fabrication process was developed. Tilted media was also studied. Very low back pressure sputtering equipment was introduced to develop high Ku media. Ultra thin overcoat fabrication process was studied. Heat durability evaluations of lubricants selected candidates for thermally assisted recording. Thermal effect around energy assisting elements was quantitatively analyzed. (2) High performance magnetic head: Head field simulations considering fabrication process confirmed that over 10kOe can be obtained with 20nm width pole. Inverse-tapered pole process was developed. For 2.5Tb/in^2 recording, high speed response of the head field was numerically analyzed. Self aligned process development was started to realize 20nm level near filed generator. For microwave assisted recording, simulation confirmed that high frequency filed of 20GHz and over 2kOe can be generated using spin torque effect. Performance of CPP-GMR sensor below 50nm width was estimated. Heusler alloy film was evaluated for CPP-GMR sensor film candidate. 30nm width sensor fabrication process was confirmed. For head dynamics evaluation spin-stand with 0.4nm positioning accuracy was introduced. For energy assist head evaluation, LD controller and data generator was also introduced. (3) High accuracy nano-addressing: Required specifications for 2.5Tb/in^2 class nano positioning was derived. For radial positioning dual-stage actuator was studied and its potential toward the target specification was confirmed. For tangential tracking, position accuracy was numerically analyzed. For quantitative analysis of nano-positioning system, evaluation of flow induced vibration is the essential. Large scale cluster PC system was introduced to perform large scale simulation of fluid-structure coupling analysis.
ダウンロード成果報告書データベース(ユーザ登録必須)から、ダウンロードしてください。

▲トップに戻る