Relaxation time and thermal stability in magneto-optical recording media

Rachid Sbiaa; Mitsunori Mochida; Yusuke Itoh; Takao Suzuki

doi:10.1109/20.908393

Relaxation time and thermal stability in magneto-optical recording media

Rachid Sbiaa, Mitsunori Mochida, Yusuke Itoh, Takao Suzuki

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

8 Citations (Scopus)

Abstract

In this study, the time dependence of the magnetization process in amorphous TbFeCo thin films and (TbFeCo/Pt) multilayers is studied. By assuming a Gaussian distribution of relaxation times for magnetic aftereffect, the non-Arrhenius behavior of the magnetization decay is found in almost all of samples. From a fitting of experimental data one can determine the mean value of relaxation time τ₀ and also its width Δτ₀. The multilayers of TbFeCo/Pt show a high stability compared to single layers of TbFeCo with also a small activation volume.

Original language	English
Pages (from-to)	2279-2281
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	36
Issue number	5
DOIs	https://doi.org/10.1109/20.908393
Publication status	Published - Sept 2000
Externally published	Yes

Keywords

Activation volume
Magnetic viscosity
Relaxation time
Thermal stability

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/20.908393

Cite this

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title = "Relaxation time and thermal stability in magneto-optical recording media",

abstract = "In this study, the time dependence of the magnetization process in amorphous TbFeCo thin films and (TbFeCo/Pt) multilayers is studied. By assuming a Gaussian distribution of relaxation times for magnetic aftereffect, the non-Arrhenius behavior of the magnetization decay is found in almost all of samples. From a fitting of experimental data one can determine the mean value of relaxation time τ0 and also its width Δτ0. The multilayers of TbFeCo/Pt show a high stability compared to single layers of TbFeCo with also a small activation volume.",

keywords = "Activation volume, Magnetic viscosity, Relaxation time, Thermal stability",

author = "Rachid Sbiaa and Mitsunori Mochida and Yusuke Itoh and Takao Suzuki",

note = "Funding Information: Manuscript received February 14, 2000. This work has been supported in part by the Grant-in-Aid for International Scientific Research (Joint Research #09044186) and the Graint-in-Aid for Academic Frontier Center supported by the Ministry of Education, Science, Sports, and Culture.",

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doi = "10.1109/20.908393",

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pages = "2279--2281",

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T1 - Relaxation time and thermal stability in magneto-optical recording media

AU - Sbiaa, Rachid

AU - Mochida, Mitsunori

AU - Itoh, Yusuke

AU - Suzuki, Takao

N1 - Funding Information: Manuscript received February 14, 2000. This work has been supported in part by the Grant-in-Aid for International Scientific Research (Joint Research #09044186) and the Graint-in-Aid for Academic Frontier Center supported by the Ministry of Education, Science, Sports, and Culture.

PY - 2000/9

Y1 - 2000/9

N2 - In this study, the time dependence of the magnetization process in amorphous TbFeCo thin films and (TbFeCo/Pt) multilayers is studied. By assuming a Gaussian distribution of relaxation times for magnetic aftereffect, the non-Arrhenius behavior of the magnetization decay is found in almost all of samples. From a fitting of experimental data one can determine the mean value of relaxation time τ0 and also its width Δτ0. The multilayers of TbFeCo/Pt show a high stability compared to single layers of TbFeCo with also a small activation volume.

AB - In this study, the time dependence of the magnetization process in amorphous TbFeCo thin films and (TbFeCo/Pt) multilayers is studied. By assuming a Gaussian distribution of relaxation times for magnetic aftereffect, the non-Arrhenius behavior of the magnetization decay is found in almost all of samples. From a fitting of experimental data one can determine the mean value of relaxation time τ0 and also its width Δτ0. The multilayers of TbFeCo/Pt show a high stability compared to single layers of TbFeCo with also a small activation volume.

KW - Activation volume

KW - Magnetic viscosity

KW - Relaxation time

KW - Thermal stability

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JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

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Relaxation time and thermal stability in magneto-optical recording media

Abstract

Keywords

ASJC Scopus subject areas

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