DOI: 10.1002/adma.201801325. Controlling Magnetic and Optical Properties of the van der Waals Crystal CrCl3−xBrx via Mixed Halide Chemistry

Controlling Magnetic and Optical Properties of the van der Waals Crystal CrCl3−xBrx via Mixed Halide Chemistry

10.1002/adma.201801325

Crossref journal-article

Wiley

Advanced Materials (311)

Abstract

AbstractMagnetic van der Waals (vdW) materials are the centerpiece of atomically thin devices with spintronic and optoelectronic functions. Exploring new chemistry paths to tune their magnetic and optical properties enables significant progress in fabricating heterostructures and ultracompact devices by mechanical exfoliation. The key parameter to sustain ferromagnetism in 2D is magnetic anisotropy—a tendency of spins to align in a certain crystallographic direction known as easy‐axis. In layered materials, two limits of easy‐axis are in‐plane (XY) and out‐of‐plane (Ising). Light polarization and the helicity of topological states can couple to magnetic anisotropy with promising photoluminescence or spin‐orbitronic functions. Here, a unique experiment is designed to control the easy‐axis, the magnetic transition temperature, and the optical gap simultaneously in a series of CrCl3−xBrx crystals between CrCl3 with XY and CrBr3 with Ising anisotropy. The easy‐axis is controlled between the two limits by varying spin–orbit coupling with the Br content in CrCl3−x Brx. The optical gap, magnetic transition temperature, and interlayer spacing are all tuned linearly with x. This is the first report of controlling exchange anisotropy in a layered crystal and the first unveiling of mixed halide chemistry as a powerful technique to produce functional materials for spintronic devices.

Bibliography

Abramchuk, M., Jaszewski, S., Metz, K. R., Osterhoudt, G. B., Wang, Y., Burch, K. S., & Tafti, F. (2018). Controlling Magnetic and Optical Properties of the van der Waals Crystal CrCl3âxBrx via Mixed Halide Chemistry. Advanced Materials, 30(25). Portico.

Authors 7

Mykola Abramchuk (first)
Samantha Jaszewski (additional)
Kenneth R. Metz (additional)
Gavin B. Osterhoudt (additional)
Yiping Wang (additional)
Kenneth S. Burch (additional)
Fazel Tafti (additional)

References 31 Referenced 115

10.1039/C5CP04835D
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{'key': 'e_1_2_5_10_1', 'first-page': '01400', 'volume': '1', 'author': 'McGuire M. A.', 'year': '2017', 'journal-title': 'Phys. Rev. Mater.'} / Phys. Rev. Mater. by McGuire M. A. (2017)
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Dates

Type	When
Created	7 years, 3 months ago (May 2, 2018, 2:25 p.m.)
Deposited	1 year, 11 months ago (Sept. 10, 2023, 1:34 p.m.)
Indexed	3 weeks, 3 days ago (Aug. 7, 2025, 5:06 a.m.)
Issued	7 years, 3 months ago (May 2, 2018)
Published	7 years, 3 months ago (May 2, 2018)
Published Online	7 years, 3 months ago (May 2, 2018)
Published Print	7 years, 2 months ago (June 1, 2018)

Funders 1

National Science Foundation 10.13039/100000001
Region: Americas
gov (National government)
Labels4
1. U.S. National Science Foundation
2. NSF
3. US NSF
4. USA NSF
Awards2
1. DMR‐1708929
2. DMR‐1709987

BibTeX

@article{Abramchuk_2018, title={Controlling Magnetic and Optical Properties of the van der Waals Crystal CrCl3−xBrx via Mixed Halide Chemistry}, volume={30}, ISSN={1521-4095}, url={http://dx.doi.org/10.1002/adma.201801325}, DOI={10.1002/adma.201801325}, number={25}, journal={Advanced Materials}, publisher={Wiley}, author={Abramchuk, Mykola and Jaszewski, Samantha and Metz, Kenneth R. and Osterhoudt, Gavin B. and Wang, Yiping and Burch, Kenneth S. and Tafti, Fazel}, year={2018}, month=may }

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