Hydrogen-mediated long-range magnetic ordering in Pd-rich alloy film

Wen Chin Lin, Cheng Jui Tsai, Han Yuan Huang, Bo Yao Wang, Venkata Ramana Mudinepalli, Hsiang Chih Chiu

研究成果: Article

19 引文 斯高帕斯(Scopus)

摘要

The effect of hydrogenation on a 14 nm Co14Pd86/Al2O3(0001) thin film was investigated on the basis of the magnetooptical Kerr effect. After exposure to H2 gas, the squareness of the hysteresis loop showed a large transition from approximately 10% to 100% and the saturation Kerr signal was reduced to nearly 30% of the pristine value. The reversibility of the transition was verified and the response time was within 2-3 s. These observations indicate that the hydride formation transformed the short-range coupled and disordered magnetic state of the Co14Pd86 film to a long-range-ordered ferromagnetic state and induced appreciable decrease in the magnetic moment. The enhanced long-range-ordering and the reduction of the magnetic moment were attributed to the change of electronic structure in Co14Pd86 with hydrogen uptake.

原文English
文章編號012404
期刊Applied Physics Letters
106
發行號1
DOIs
出版狀態Published - 2015 一月 5

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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    Lin, W. C., Tsai, C. J., Huang, H. Y., Wang, B. Y., Mudinepalli, V. R., & Chiu, H. C. (2015). Hydrogen-mediated long-range magnetic ordering in Pd-rich alloy film. Applied Physics Letters, 106(1), [012404]. https://doi.org/10.1063/1.4905463