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

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number012404
JournalApplied Physics Letters
Volume106
Issue number1
DOIs
Publication statusPublished - 2015 Jan 5

Fingerprint

Kerr magnetooptical effect
magnetic moments
hydrogen
hydrogenation
hydrides
hysteresis
electronic structure
saturation
thin films
gases

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

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
Lin, Wen Chin ; Tsai, Cheng Jui ; Huang, Han Yuan ; Wang, Bo Yao ; Mudinepalli, Venkata Ramana ; Chiu, Hsiang Chih. / Hydrogen-mediated long-range magnetic ordering in Pd-rich alloy film. In: Applied Physics Letters. 2015 ; Vol. 106, No. 1.
@article{9d5e9da479cc431286f39b793451181d,
title = "Hydrogen-mediated long-range magnetic ordering in Pd-rich alloy film",
abstract = "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.",
author = "Lin, {Wen Chin} and Tsai, {Cheng Jui} and Huang, {Han Yuan} and Wang, {Bo Yao} and Mudinepalli, {Venkata Ramana} and Chiu, {Hsiang Chih}",
year = "2015",
month = "1",
day = "5",
doi = "10.1063/1.4905463",
language = "English",
volume = "106",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "1",

}

Lin, WC, Tsai, CJ, Huang, HY, Wang, BY, Mudinepalli, VR & Chiu, HC 2015, 'Hydrogen-mediated long-range magnetic ordering in Pd-rich alloy film', Applied Physics Letters, vol. 106, no. 1, 012404. https://doi.org/10.1063/1.4905463

Hydrogen-mediated long-range magnetic ordering in Pd-rich alloy film. / Lin, Wen Chin; Tsai, Cheng Jui; Huang, Han Yuan; Wang, Bo Yao; Mudinepalli, Venkata Ramana; Chiu, Hsiang Chih.

In: Applied Physics Letters, Vol. 106, No. 1, 012404, 05.01.2015.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Hydrogen-mediated long-range magnetic ordering in Pd-rich alloy film

AU - Lin, Wen Chin

AU - Tsai, Cheng Jui

AU - Huang, Han Yuan

AU - Wang, Bo Yao

AU - Mudinepalli, Venkata Ramana

AU - Chiu, Hsiang Chih

PY - 2015/1/5

Y1 - 2015/1/5

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84923769307&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84923769307&partnerID=8YFLogxK

U2 - 10.1063/1.4905463

DO - 10.1063/1.4905463

M3 - Article

AN - SCOPUS:84923769307

VL - 106

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 1

M1 - 012404

ER -