[17p-M_278-1~16] 6.1 Ferroelectric thin films

5:45 PM - 6:00 PM JST(8:45 AM - 9:00 AM UTC)

[17p-M_278-15] Non-Contact Heat Assisted Ferroelectric Reading

〇Yasuo Cho¹, Kohei Yamasue² (1.Tohoku Univ. NICHe, 2.Tohoku Univ. RIEC)

Keywords:

ultra-high density ferroelctric data storage

There is concern that adopting a non-contact method in HAFeR might cause the (linear) dielectric constant on the medium side to become too large due to optical heating, thereby limiting the tip-sample capacitance to the gap capacitance and preventing the acquisition of SNDM signals. However, experiments confirmed the HAFeR effect in gaps within the tip radius (approximately 30 nm). Since the gap length at the practical implementation stage of ferroelectric recording is expected to be 1 nm or less, it was found that the same HAFeR effect as during contact can realistically be obtained.