希土類-遷移金属系多層膜の界面近傍での熱による原子の拡散とその抑制

稀土-过渡金属多层膜界面附近的热致原子扩散及其抑制

• 批准号: 08750771
• 负责人: 山田 一雅
• 金额: $ 0.64万
• 依托单位: Hakodate National College of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Encouragement of Young Scientists (A)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08750771/
• 关键词: 合金多層膜; トレーサ拡散; 拡散係数; 活性化エネルギー; 示差走査熱量分析; 非晶質合金

本研究では、原子の拡散現象の考察の主眼を拡散係数と拡散の活性化エネルギーに置き、原子の拡散メカニズムについて考察することを目的とした.拡散係数と拡散の活性化エネルギーの精密測定が、実験の中心課題であった.拡散をどのように防ぎ、どういった方法で制御するかについては、メタロイドSiの添加によって生じる原子間の共有結合力が有効に原子の拡散距離の低下に作用しているかどうかについて検討を行った.希土類-遷移金属系多層膜での界面構造はいずれも非晶質状態の界面と同じと考えることができる.本テーマで用いた基本試料は、希土類にTb、遷移金属にFeの非晶質合金系とした.不活性ガス雰囲気中で試料を昇温させた過程で生じる熱量から、薄膜全域の原子の拡散の活性化エネルギーを検討した.その結果、活性化エネルギーの増加はメタロイドを添加しないものを基準にとって比較すると、添加2%で1.7倍の増加、添加20%で2.0倍の増加になった.また、放射性同位元素を用いた拡散係数の精密測定では、拡散係数が1桁から2桁以上の減少を確認し、拡散の進行が急激に困難になることがわかった.以上のことは、強力な共有結合力により、原子の拡散する経路がブリッジされたこと、拡散の経路になる準空孔体積が相対的に減少したこと、の二つが考えられる.特に低温での拡散係数の大幅な低下を示した上記結果は、界面付近の微小距離の測定実験からの結果より導き出したものであり、界面での原子の挙動を正確に反映している.よってこのことから、メタロイドの共有結合性は原子拡散の抑制効果に極めて有効に利用できると結論することができる.

In this study, the dispersion of the main eye, the number of dispersion, the activation of the dispersion, the dispersion of the atom, the dispersion of the main eye, the dispersion of the main eye, the number of dispersion, the activation of the main eye, the activation of the main eye, the dispersion of the main eye, the number of dispersion, the activation of the main eye, the dispersion of the main eye, the number of dispersion, the activation of the main eye, the dispersion of the main eye, the number of dispersion, the activation of the main eye, the dispersion of the main eye, the number of dispersion, the activation of the main eye, the dispersion of the main eye, the number of dispersion, the activation of the main eye, the dispersion of the main eye, the dispersion of the main eye, the number of dispersion, the activation of the main eye, the dispersion of the main eye The number of dispersion data, the activation data, the precision measurement, the center problem and the precision measurement are very important. The methods of dispersion, prevention, prevention and control are used to control the formation of Si and to add the common binding force between the atoms. There is a common binding force between the atoms. Rare earth-transfer metal system multi-layer film interface is the same as that of amorphous state interface. We use basic materials, rare earth Tb, transfer metal Fe and amorphous alloys for this purpose. In the inactive material, the temperature of the material is measured in the process, and the film is activated by atomic dispersion in the film. The results are as follows: activating the temperature, adding the base level, adding 2%, 1.7 times, adding 20%, 2.0 times, and adding more than 1.7 times. The isotopic and radioactive elements are precisely determined by the number of scattered elements, the number of scattered elements is 1, the number of scattered elements is more than 2, and the number of radioactive isotopes is less than 1 truss. The above-mentioned structures and strength devices have a total combination of bonding strength, atomic dispersion, atomic dispersion, and dispersion, which are used to prepare for the active phase of holes. A large decrease in the number of ultra-low temperature dispersion shows that the results of the upper test, the near-range measurement of the interface, the detection of the temperature, and the atomic emission of the interface correctly reflect the temperature response. There is a common combination of atomic dispersion inhibition in the presence of both. The results show that there are significant differences in the results of the inhibition of atomic dispersion.