Universität zu Köln

Iuga, A. R., Lindfors-Vrejoiu, I and Boni, G. A. (2021). Ultrafast nondestructive pyroelectric reading of FeRAM memories. Infrared Phys. Technol., 116. AMSTERDAM: ELSEVIER. ISSN 1879-0275

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Abstract

FeRAM memories constitute themselves as a robust counterpart to the mainstream NVRAM memories. Their unique properties, such as radiation resilience and low voltage operation, together with high speed writing and reading, high and long lasting remanence and very good endurance to cycling endorse them in the data storage domain. However price, poor scalability, the destructive way of reading and the necessary consequent re-writing represent technical drawbacks that diminish their practical value. This paper presents a new paradigm of completing previous efforts towards fast nondestructive reading of FeRAMs. An intermittent low intensity IR (infrared) laser diode generates a pyroelectric signal in the ferroelectric material. The amplitude and phase of this response depends on the state of polarisation of the ferroelectric. Comparing the phase of the electric response with the phase of the illuminating radiation (on/off), a decisive indication of the poling sense in the ferroelectric is given. Aiming to circumvent the notorious slowness of the pyroelectric response the array is continuously illuminated with the pulsating laser, which ensures a prompt answer from every bit of memory. The reading speed is, practically, limited by the electronics.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Iuga, A. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lindfors-Vrejoiu, I UNSPECIFIED UNSPECIFIED UNSPECIFIED Boni, G. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-578117
DOI:	10.1016/j.infrared.2021.103766
Journal or Publication Title:	Infrared Phys. Technol.
Volume:	116
Date:	2021
Publisher:	ELSEVIER
Place of Publication:	AMSTERDAM
ISSN:	1879-0275
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language Instruments & Instrumentation; Optics; Physics, Applied Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/57811