Temperature dependence of the thermal properties of optical memory materials

Masashi Kuwahara; Osamu Suzuki; Yuzo Yamakawa; Naoyuki Taketoshi; Takashi Yagi; Paul Fons; Toshio Fukaya; Junji Tominaga; Tetsuya Baba

doi:10.1143/JJAP.46.3909

Temperature dependence of the thermal properties of optical memory materials

Masashi Kuwahara, Osamu Suzuki, Yuzo Yamakawa, Naoyuki Taketoshi, Takashi Yagi, Paul Fons, Toshio Fukaya, Junji Tominaga, Tetsuya Baba

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

37 Citations (Scopus)

Abstract

We have measured the temperature dependence of the thermal conductivities of Ge₂Sb₂Te₅ (GST) and ZnS-SiO₂ using a nano second thermoreflectance measurement system from room temperature to 500-600°C. The specific heat capacities of these materials also have been determined from -130 to 500 °C for GST and from room temperature to 600°C for ZnS-SiO₂. The Debye temperature was obtained from specific heat capacity measurement. Using the obtained temperature dependence of the thermal conductivities, a temperature simulation inside a simple structured optical disk with and without considering its temperature dependence was carried out, and the difference in maximum temperature was approximate 80 °C.

Original language	English
Pages (from-to)	3909-3911
Number of pages	3
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	46
Issue number	6 B
DOIs	https://doi.org/10.1143/JJAP.46.3909
Publication status	Published - 2007 Jun 22
Externally published	Yes

Keywords

Optical disk materials
Specific heat capacity
Temperature dependence
Thermal conductivity

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.46.3909

Cite this

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title = "Temperature dependence of the thermal properties of optical memory materials",

abstract = "We have measured the temperature dependence of the thermal conductivities of Ge2Sb2Te5 (GST) and ZnS-SiO2 using a nano second thermoreflectance measurement system from room temperature to 500-600°C. The specific heat capacities of these materials also have been determined from -130 to 500 °C for GST and from room temperature to 600°C for ZnS-SiO2. The Debye temperature was obtained from specific heat capacity measurement. Using the obtained temperature dependence of the thermal conductivities, a temperature simulation inside a simple structured optical disk with and without considering its temperature dependence was carried out, and the difference in maximum temperature was approximate 80 °C.",

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T1 - Temperature dependence of the thermal properties of optical memory materials

AU - Kuwahara, Masashi

AU - Suzuki, Osamu

AU - Yamakawa, Yuzo

AU - Taketoshi, Naoyuki

AU - Yagi, Takashi

AU - Fons, Paul

AU - Fukaya, Toshio

AU - Tominaga, Junji

AU - Baba, Tetsuya

PY - 2007/6/22

Y1 - 2007/6/22

N2 - We have measured the temperature dependence of the thermal conductivities of Ge2Sb2Te5 (GST) and ZnS-SiO2 using a nano second thermoreflectance measurement system from room temperature to 500-600°C. The specific heat capacities of these materials also have been determined from -130 to 500 °C for GST and from room temperature to 600°C for ZnS-SiO2. The Debye temperature was obtained from specific heat capacity measurement. Using the obtained temperature dependence of the thermal conductivities, a temperature simulation inside a simple structured optical disk with and without considering its temperature dependence was carried out, and the difference in maximum temperature was approximate 80 °C.

AB - We have measured the temperature dependence of the thermal conductivities of Ge2Sb2Te5 (GST) and ZnS-SiO2 using a nano second thermoreflectance measurement system from room temperature to 500-600°C. The specific heat capacities of these materials also have been determined from -130 to 500 °C for GST and from room temperature to 600°C for ZnS-SiO2. The Debye temperature was obtained from specific heat capacity measurement. Using the obtained temperature dependence of the thermal conductivities, a temperature simulation inside a simple structured optical disk with and without considering its temperature dependence was carried out, and the difference in maximum temperature was approximate 80 °C.

KW - Optical disk materials

KW - Specific heat capacity

KW - Temperature dependence

KW - Thermal conductivity

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Temperature dependence of the thermal properties of optical memory materials

Abstract

Keywords

ASJC Scopus subject areas

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