New magnetic nanodot memory with FePt nanodots

Cheng Kuan Yin; Mariappan Murugesan; Ji Chel Bea; Mikihiko Oogane; Takafumi Fukushima; Tetsu Tanaka; Shozo Kono; Seiji Samukawa; Mitsumasa Koyanagi

doi:10.1143/JJAP.46.2167

New magnetic nanodot memory with FePt nanodots

Cheng Kuan Yin, Mariappan Murugesan, Ji Chel Bea, Mikihiko Oogane, Takafumi Fukushima, Tetsu Tanaka, Shozo Kono, Seiji Samukawa, Mitsumasa Koyanagi

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

A new magnetic nanodot (MND) memory with FePt nanodots was proposed. The FePt nanodots dispersed in SiO₂ insulating film was successfully fabricated by self-assembled nanodot deposition (SAND). The size of the FePt nanodot can be controlled by SAND with a different target area ratio of the FePt pellets area in the SiO₂ target. Thermal annealing converts the magnetic properties of the FePt nanodots from antiferromagnetic into high coercivity ferromagnetic without thermal agglomeration. An L1₀ face-centered tetragonal (fct) FePt MND film was successfully formed which acted as a charge retention layer. Furthermore, the fundamental characteristics of the MND memory were investigated using magnetic metal oxide semiconductor (MOS) capacitor devices.

Original language	English
Pages (from-to)	2167-2171
Number of pages	5
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	46
Issue number	4 B
DOIs	https://doi.org/10.1143/JJAP.46.2167
Publication status	Published - 2007 Apr 24

Keywords

Annealing
FePt
Flash memory
Magnetic
Nanodot
Nonvolatile memory

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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New magnetic nanodot memory with FePt nanodots. / Yin, Cheng Kuan; Murugesan, Mariappan; Bea, Ji Chel ; Oogane, Mikihiko ; Fukushima, Takafumi ; Tanaka, Tetsu; Kono, Shozo; Samukawa, Seiji; Koyanagi, Mitsumasa.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 46, No. 4 B, 24.04.2007, p. 2167-2171.

Research output: Contribution to journal › Article › peer-review

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abstract = "A new magnetic nanodot (MND) memory with FePt nanodots was proposed. The FePt nanodots dispersed in SiO2 insulating film was successfully fabricated by self-assembled nanodot deposition (SAND). The size of the FePt nanodot can be controlled by SAND with a different target area ratio of the FePt pellets area in the SiO2 target. Thermal annealing converts the magnetic properties of the FePt nanodots from antiferromagnetic into high coercivity ferromagnetic without thermal agglomeration. An L10 face-centered tetragonal (fct) FePt MND film was successfully formed which acted as a charge retention layer. Furthermore, the fundamental characteristics of the MND memory were investigated using magnetic metal oxide semiconductor (MOS) capacitor devices.",

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AU - Bea, Ji Chel

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AU - Tanaka, Tetsu

AU - Kono, Shozo

AU - Samukawa, Seiji

AU - Koyanagi, Mitsumasa

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New magnetic nanodot memory with FePt nanodots

Abstract

Keywords

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