2005 Fiscal Year Final Research Report Summary
Spatio-temporal Structural Fluctuation in Radiation induced amorphization and 1/f noise
| Project/Area Number |
15560569
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Physical properties of metals
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| Research Institution | HOKKAIDO UNIVERSITY |
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Principal Investigator |
WATANABE Seiichi Hokkaido Univ., Center for Advanced Research of Energy Conversion Materials, Professor, エネルギー変換マテリアル研究センター, 教授 (60241353)
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| Project Period (FY) |
2003 – 2005
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| Keywords | amorphous / metallic glass / nonequilibrium materials / TEM / radiation effect / fluctuation / scale invariance / far-from-equilibrium |
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| Research Abstract |
Temporal nanostructural fluctuations brought about by transient, metastable atom-cluster formation during radiation-induced amorphizing transformation in the intermetallic compound NiTi, observed using a combination of high-resolution high-voltage electron microscopy and molecular dynamics simulations, were characterized in terms of power-law responses of nonequilibrium, energy-dissipative systems. Within the framework of the multi-Lorentzian picture, the resultant power law also describes the multirelaxation time (i.e., cluster lifetime) distribution. In addition, a unified relation for the autocorrelation functions for such fluctuation phenomena was newly proposed.
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