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Ferroelectrics Volume 493, 2016 - Issue 1
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Original Articles

Operating frequency of ferroelectric memory at low-terahertz range

Hong CuiFaculty of Automation and Information Engineering, Xi'an University of Technology, Xi'an, China;Department of Applied Physics, Xi'an University of Technology, Xi'an, ChinaCorrespondence[email protected]
,
Xianbin ZhangDepartment of Applied Physics, Xi'an University of Technology, Xi'an, China
,
Xuyan WeiDepartment of Applied Physics, Xi'an University of Technology, Xi'an, China
,
Yuexing YangDepartment of Applied Physics, Xi'an University of Technology, Xi'an, China
&
Qiong FangDepartment of Applied Physics, Xi'an University of Technology, Xi'an, China
Pages 39-46 | Accepted 19 Jan 2015, Published online: 22 Feb 2016
 
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ABSTRACT

Operating frequency of graphene and lithium niobate in ferroelectric memory are studied at low frequency terahertz range. Terahertz time-domain spectrum is measured and analyzed, which shows terahertz absorption is very small and terahertz transmittance is close to 97.7%. Raman spectrum of graphene shows that, carbon atoms resonance and two-phonon resonance occur in high terahertz range. Raman spectrum of pure lithium niobate crystal shows in NbO6 groups, niobate atoms vibrate at 253.037 cm−1 and Nb atomic vibration is used for storing data 1 and 0. Therefore, graphene-lithium niobate memory may operate in low terahertz range.

Funding

This work was supported by the National Natural Science Foundation of China (No.61377036, No.60971015) and by science and the technology research and development projects of Shaanxi province (No.2013K09-21).

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