Heteroepitaxy of Co-Based Heusler Compound/Muscovite for Flexible Spintronics

Chen YC, Yen M, Lai YH, Markou A, Zhang L, Chin YY, Lin HJ, Chen CT, Felser C, Chu YH (2019)

Publication Type: Journal article

Publication year: 2019

Journal

ACS Applied Materials and Interfaces American Chemical Society

Book Volume: 11

Pages Range: 35162-35168

Journal Issue: 38

DOI: 10.1021/acsami.9b12219

Abstract

Materials with high spin-polarization play an important role in the development of spintronics. Co-based Heusler compounds are a promising candidate for practical applications because of their high Curie temperature and tunable half-metallicity. However, it is a challenge to integrate Heusler compounds into thin film heterostructures because of the lack of control on crystallinity and chemical disorder, critical factors of novel behaviors. Here, muscovite is introduced as a growth substrate to fabricate epitaxial Co2MnGa films with mechanical flexibility. The feature of heteroepitaxy is evidenced by the results of X-ray diffraction and transmission electron microscopy. Moreover, high chemical ordering with superior properties is delivered according to the observation of large Hall conductivity (680 ω-1 cm-1) and highly saturated magnetic moment (∼3.93 μB/f.u.), matching well with bulk crystals. Furthermore, the excellence of magnetic and electrical properties is retained under the various mechanical bending conditions. Such a result suggests that the development of Co2MnGa/muscovite heteroepitaxy provides not only a pathway to the thin film heterostructure based on high-quality Heusler compounds but also a new aspect of spintronic applications on flexible substrates.

Involved external institutions

National Chiao Tung University (NCTU) / 國立交通大學 TW Taiwan (TW) Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE) National Chung Cheng University TW Taiwan (TW) National Synchrotron Radiation Research Center (NSRRC) TW Taiwan (TW)

How to cite

APA:

Chen, Y.-C., Yen, M., Lai, Y.-H., Markou, A., Zhang, L., Chin, Y.-Y.,... Chu, Y.-H. (2019). Heteroepitaxy of Co-Based Heusler Compound/Muscovite for Flexible Spintronics. ACS Applied Materials and Interfaces, 11(38), 35162-35168. https://doi.org/10.1021/acsami.9b12219

MLA:

Chen, Yi-Cheng, et al. "Heteroepitaxy of Co-Based Heusler Compound/Muscovite for Flexible Spintronics." ACS Applied Materials and Interfaces 11.38 (2019): 35162-35168.

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