Thickness Dependence of Magnetic Properties and Read-Write Characteristics for Iron Oxide Thin Films
Summary :
The thickness dependence of structure, magnetic properties and read-write characteristics has been studied for sputtered iron oxide thin films prepared by RF reactive sputtering. For sputter-deposited Fe3O4 films, [111] preferential orientation perpendicular to film surface is improved and crystal size increases with an increase in thickness (δ). Magnetic properties for Fe3O4 films are affected by thickness. In particular, saturation magnetization rapidly decreases at thicknesses less than about 0.07 µm. From this perspective, it is concluded that a thickness larger than about 0.07 µm is available for practical use. For oxidation-annealed γ- Fe2O3 media, signal-output and media transition length are proportional to δ0.7 and δ0.5, respectively. A γ-(Co0.025Cu0.03Fe0.945)2O3 medium with a 0.071 µm thickness shows 0.51 mV of Epp, 2000 frpm of D-6 dB, -35 dB of O/W and 38 dB of SNR.
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- IEICE TRANSACTIONS on transactions Vol.E68-E No.3 pp.173-179
- Publication Date
- 1985/03/25
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- Materials
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Satoshi OHTA, Akira TERADA, Yoshikazu ISHII, Seiji HATTORI, "Thickness Dependence of Magnetic Properties and Read-Write Characteristics for Iron Oxide Thin Films" in IEICE TRANSACTIONS on transactions,
vol. E68-E, no. 3, pp. 173-179, March 1985, doi: .
Abstract: The thickness dependence of structure, magnetic properties and read-write characteristics has been studied for sputtered iron oxide thin films prepared by RF reactive sputtering. For sputter-deposited Fe3O4 films, [111] preferential orientation perpendicular to film surface is improved and crystal size increases with an increase in thickness (δ). Magnetic properties for Fe3O4 films are affected by thickness. In particular, saturation magnetization rapidly decreases at thicknesses less than about 0.07 µm. From this perspective, it is concluded that a thickness larger than about 0.07 µm is available for practical use. For oxidation-annealed γ- Fe2O3 media, signal-output and media transition length are proportional to δ0.7 and δ0.5, respectively. A γ-(Co0.025Cu0.03Fe0.945)2O3 medium with a 0.071 µm thickness shows 0.51 mV of Epp, 2000 frpm of D-6 dB, -35 dB of O/W and 38 dB of SNR.
URL: https://global.ieice.org/en_transactions/transactions/10.1587/e68-e_3_173/_p
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@ARTICLE{e68-e_3_173,
author={Satoshi OHTA, Akira TERADA, Yoshikazu ISHII, Seiji HATTORI, },
journal={IEICE TRANSACTIONS on transactions},
title={Thickness Dependence of Magnetic Properties and Read-Write Characteristics for Iron Oxide Thin Films},
year={1985},
volume={E68-E},
number={3},
pages={173-179},
abstract={The thickness dependence of structure, magnetic properties and read-write characteristics has been studied for sputtered iron oxide thin films prepared by RF reactive sputtering. For sputter-deposited Fe3O4 films, [111] preferential orientation perpendicular to film surface is improved and crystal size increases with an increase in thickness (δ). Magnetic properties for Fe3O4 films are affected by thickness. In particular, saturation magnetization rapidly decreases at thicknesses less than about 0.07 µm. From this perspective, it is concluded that a thickness larger than about 0.07 µm is available for practical use. For oxidation-annealed γ- Fe2O3 media, signal-output and media transition length are proportional to δ0.7 and δ0.5, respectively. A γ-(Co0.025Cu0.03Fe0.945)2O3 medium with a 0.071 µm thickness shows 0.51 mV of Epp, 2000 frpm of D-6 dB, -35 dB of O/W and 38 dB of SNR.},
keywords={},
doi={},
ISSN={},
month={March},}
Copy
TY - JOUR
TI - Thickness Dependence of Magnetic Properties and Read-Write Characteristics for Iron Oxide Thin Films
T2 - IEICE TRANSACTIONS on transactions
SP - 173
EP - 179
AU - Satoshi OHTA
AU - Akira TERADA
AU - Yoshikazu ISHII
AU - Seiji HATTORI
PY - 1985
DO -
JO - IEICE TRANSACTIONS on transactions
SN -
VL - E68-E
IS - 3
JA - IEICE TRANSACTIONS on transactions
Y1 - March 1985
AB - The thickness dependence of structure, magnetic properties and read-write characteristics has been studied for sputtered iron oxide thin films prepared by RF reactive sputtering. For sputter-deposited Fe3O4 films, [111] preferential orientation perpendicular to film surface is improved and crystal size increases with an increase in thickness (δ). Magnetic properties for Fe3O4 films are affected by thickness. In particular, saturation magnetization rapidly decreases at thicknesses less than about 0.07 µm. From this perspective, it is concluded that a thickness larger than about 0.07 µm is available for practical use. For oxidation-annealed γ- Fe2O3 media, signal-output and media transition length are proportional to δ0.7 and δ0.5, respectively. A γ-(Co0.025Cu0.03Fe0.945)2O3 medium with a 0.071 µm thickness shows 0.51 mV of Epp, 2000 frpm of D-6 dB, -35 dB of O/W and 38 dB of SNR.
ER -
English
