Recent Progress on Research and Development for Practical Application of HDD-Type Ultra-High Density Ferroelectric Data Storage

#ferroelectric #HDD #Storage #Data #memory #media
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Abstract
With the advances in information processing technology, the importance of high-density data storage is increasing. For example, it is predicted that the total global amount of digital data will reach 163 ZB in this year. On the other hand, studies on thermal fluctuations predict that magnetic storage, which plays a major role in this field, will reach a theoretical limit in the near future, and thus a novel high-density storage method is required.
Ferroelectrics can hold bit information in the form of the polarization direction of individual domains. Moreover, the domain wall of typical ferroelectric materials with no exchange interaction between electric dipoles is as thin as a few lattice parameters, which is favorable for high-density data storage.
With this background, we previously proposed ferroelectric data storage that uses scanning nonlinear dielectric microscopy (SNDM), called SNDM probe memory, as a next-generation ultrahigh-density information recording method. We confirmed extremely high recording density and high-speed writing using LiTaO3 single crystal media, i.e. 2.8-nm f single nano-domain inversion dot formation, real information storage at a density of 4 Tbit/inch2, and 500-psec high speed domain switching.
In this seminar, I will outline recent research and development toward the practical application of this SNDM probe memory.
The contents of the talk are as follows.
    1. Overview of SNDM probe memory operating principles and high-density recording results.
    2. Proposal of Heat assisted ferroelectric reading  (HAFeR) for high speed ferroelectric probe data storage.
    3. Demonstration of actual nanosecond dielectric response using HAFeR technology
    4. 8-inch f 30nm thick PZT single-crystal like recording media trial fabrication by sputtering method for the realistic recording media.
    5.  

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  • Date: 12 May 2025
  • Time: 07:00 PM UTC to 08:00 PM UTC
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  Speakers

Yasuo

Topic:

Recent Progress on Research and Development for Practical Application of HDD-Type Ultra-High Density Ferroelectric Data

Abstract
With the advances in information processing technology, the importance of high-density data storage is increasing. For example, it is predicted that the total global amount of digital data will reach 163 ZB in this year. On the other hand, studies on thermal fluctuations predict that magnetic storage, which plays a major role in this field, will reach a theoretical limit in the near future, and thus a novel high-density storage method is required.
Ferroelectrics can hold bit information in the form of the polarization direction of individual domains. Moreover, the domain wall of typical ferroelectric materials with no exchange interaction between electric dipoles is as thin as a few lattice parameters, which is favorable for high-density data storage.
With this background, we previously proposed ferroelectric data storage that uses scanning nonlinear dielectric microscopy (SNDM), called SNDM probe memory, as a next-generation ultrahigh-density information recording method. We confirmed extremely high recording density and high-speed writing using LiTaO3 single crystal media, i.e. 2.8-nm f single nano-domain inversion dot formation, real information storage at a density of 4 Tbit/inch2, and 500-psec high speed domain switching.
In this seminar, I will outline recent research and development toward the practical application of this SNDM probe memory.
The contents of the talk are as follows.
  1. Overview of SNDM probe memory operating principles and high-density recording results.
  2. Proposal of Heat assisted ferroelectric reading  (HAFeR) for high speed ferroelectric probe data storage.
  3. Demonstration of actual nanosecond dielectric response using HAFeR technology
  4. 8-inch f 30nm thick PZT single-crystal like recording media trial fabrication by sputtering method for the realistic recording media.
  5. First trial of shingled dielectric recording for the realization of practical high density data storage
 
 

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