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How does an Ultrathin Cobalt Film Response to the Presence of a Neighboring Pentacene Layer

Published online by Cambridge University Press:  31 January 2011

Yuet-Loy Chan
Affiliation:
ylchan@nsrrc.org.tw, National Synchrotron Radiation Research Center, Hsinchu, Taiwan, Province of China
Ya-Jyuan Hung
Affiliation:
yajyuanja@hotmail.com, National Synchrotron Radiation Research Center, Hsinchu, Taiwan, Province of China
Chia-Hao Wang
Affiliation:
chiahauwang@yahoo.com.tw, National Synchrotron Radiation Research Center, Hsinchu, Taiwan, Province of China
Ying-Chang Lin
Affiliation:
lyc@nsrrc.org.tw, National Synchrotron Radiation Research Center, Hsinchu, Taiwan, Province of China
Ching-Yuan Chiu
Affiliation:
cychiu@nsrrc.org.tw, National Synchrotron Radiation Research Center, Hsinchu, Taiwan, Province of China
Yu-Ling Lai
Affiliation:
yllai@nsrrc.org.tw, National Synchrotron Radiation Research Center, Hsinchu, Taiwan, Province of China
Hsu-Ting Chang
Affiliation:
a68118.a68118@msa.hinet.net, National Synchrotron Radiation Research Center, Hsinchu, Taiwan, Province of China
Chih-Hao Lee
Affiliation:
chlee@ess.nthu.edu.tw, National Tsing Hua University, Department of Engineering and System Science, Hsinchu, Taiwan, Province of China
Yao-Jane Hsu
Affiliation:
yjhsu@nsrrc.org.tw, National Synchrotron Radiation Research Center, Hsinchu, Taiwan, Province of China
Der-Hsin Wei
Affiliation:
dhw@nsrrc.org.tw, National Synchrotron Radiation Research Center, Hsinchu, Taiwan, Province of China
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Abstract

The interfacial regimes of cobalt/pentacene/cobalt (Co/Pc/Co) trilayers were emulated through the ultrathin pentacene/cobalt (Pc/Co) and cobalt/pentacene (Co/Pc) bilayers. Employing the magneto-optical Kerr effect (MOKE) measurement, we found the coercivity of Co bottom film in a thickness of 3.4 nm experienced a slight reduction upon the adsorption of Pc molecules. For the bilayers prepared with reversed order of deposition, the Co film deposited on a 6.4 nm Pc layer showed no observable ferromagnetic order at room temperature until its thickness reached 3 nm. After the onset of magnetic order, the x-ray images acquired on Pc/Co revealed a complicated magnetization patterns comparing to those observed on Co/Pc bilayers. Because the spin-polarized carriers will interact with the environment along their transport path, the presence of a non-magnetic layer and the occurrence of complicated domain structures suggested the spin-polarized carriers would experience a greater disturbance on their spin coherence when crossing the Pc/Co interface.

Type
Research Article
Copyright
Copyright © Materials Research Society 2010

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References

1 Naber, W. J. M., Faez, S., and Wiel, W. G. van der, J. Phys. D: Appl. Phys. 40, R205 (2007).CrossRefGoogle Scholar
2 Sanvito, S., Nature Mater. 6, 803 (2009).Google Scholar
3 Dediu, V. A., Hueso, L. E., Bergenti, I., and Taliani, C., Nature Mater. 8, 707 (2009).CrossRefGoogle Scholar
4 Xiong, Z. H., Wu, D., Vardeny, Z. Valy and Shi, J., Nature 427, 821 (2004).CrossRefGoogle Scholar
5 Wang, F. J., Xiong, Z. H., Wu, D., Shi, J., and Vardeny, Z. V., Synthetic Metals 155, 172 (2005).CrossRefGoogle Scholar
6 Wei, D. H., Hsu, Y. J., Lin, C. C., Lai, C. H., Ou, J. Y., Wu, J. C., J. Magn. Magn. Mater. 282, 49, (2004).CrossRefGoogle Scholar
7 Xu, W., Brauer, J., Szulczewski, G., Driver, M. Sky, and Caruso, A. N., Appl. Phys. Lett. 94, 233302 (2009).CrossRefGoogle Scholar
8 Zhan, Y. Q., Liu, X. J., Carlegrim, E., Li, F. H., Bergenti, I., Graziosi, P., Dediu, V., and Fahlman, M., Appl. Phys. Lett. 94, 053301 (2009).CrossRefGoogle Scholar
9 Marrows, C. H., Adv. Phys. 54, 585, (2005).CrossRefGoogle Scholar

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