This paper reports on a magnetic device with a [Co40Pd60/Cu]10/Fe structure for use in the detection of H2. In a magneto-optical, transport, and gas-detection system, the proposed device presented sharp, reproducible H2-dependent magnetic/electrical properties. The device's saturation magnetization (induced resistance change) dropped (increased) by a factor of ∼5 when a H2 pressure of 75 kPa is given. Besides, the electrical signal-to-noise ratio of the device can be restored ∼50% by exposing it to a magnetic field of 1000 Oe, even when the sensitivity of the device dropped at a low H2 pressure (0.7 KPa). This demonstrates the applicability of the device for use as a low-pressure H2 detector. Operando x-ray spectroscopy revealed that changes in H2-induced magnetism arose from a Co-Pd charge transfer effect coupled to changes in the local-structure symmetry.
Skip Nav Destination
Article navigation
10 July 2017
Research Article|
July 12 2017
Using magnetic structure of Co40Pd60/Cu for the sensing of hydrogen
Appl. Phys. Lett. 111, 023503 (2017)
Article history
Received:
April 08 2017
Accepted:
June 26 2017
Citation
Jaw-Yeu LiangYun-Chieh PaiTu-Ngoc LamWen-Chin LinTing-Shan ChanChih-Huang LaiYuan-Chieh Tseng; Using magnetic structure of Co40Pd60/Cu for the sensing of hydrogen. Appl. Phys. Lett. 10 July 2017; 111 (2): 023503. https://doi.org/10.1063/1.4993158
Download citation file:
