Low Temperature Raman Spectroscopic Study on γ-Cu2(OH)3Cl

Xiao Dong Liu; Dong Dong Meng; Xu Guang Zheng; Xing Liang Xu; Qi Xin Guo

doi:10.4028/www.scientific.net/AMM.341-342.320

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 341-342Low Temperature Raman Spectroscopic Study on...

Low Temperature Raman Spectroscopic Study on γ-Cu₂(OH)₃Cl

Abstract:

The low temperature (T) Raman spectroscopic study on the geometrically frustrated clinoatacamite γ-Cu₂(OH)₃Cl is reported. By measuring the T-dependent spectral profiles and representative modes, we have obtained auxiliary evidence of successive magnetic transitions near T_c1 =18.1 K and T_c2 =6.4 K determined accurately by the magnetic experiments in the Raman band frequencies and peak widths of the representative modes for magnetic research conclusions and observed a pronounced Raman spectroscopy background featuring a broad continuum at all Ts. A quantitative analysis reveals spin fluctuations on a picosecond time scale in the intermediate phase.

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Applied Mechanics and Materials (Volumes 341-342)

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320-323

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.341-342.320

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Online since:

July 2013

Authors:

Xiao Dong Liu, Dong Dong Meng, Xu Guang Zheng, Xing Liang Xu, Qi Xin Guo

Keywords:

Antiferromagnet, Geometric Frustration, Magnetic Transition, Raman Spectroscopy, Spin-Phonon Coupling

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