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: 雜誌貢獻期刊論文同行評審

28 引文 斯高帕斯(Scopus)


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.

期刊Applied Physics Letters
出版狀態已發佈 - 2015 1月 5

ASJC Scopus subject areas

  • 物理與天文學(雜項)


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