Comprehensive thermal properties of Y₃Al₅O₁₂ from 160 K to 500 K

Area of Science:

• Materials Science
• Solid State Physics
• Thermodynamics

Background:

• Yttrium Aluminum Garnet (YAG) is a crucial material in various optical and laser applications.
• Accurate thermal property data is essential for designing and optimizing YAG-based devices.
• Existing data may be limited across the broad temperature spectrum investigated.

Purpose of the Study:

• To experimentally determine key thermophysical properties of YAG single crystals and ceramics.
• To establish comprehensive thermal property data from cryogenic to high temperatures.
• To develop numerical equations for predicting thermal properties of YAG over a wide temperature range.

Main Methods:

• Experimental measurement of linear thermal expansion.
• Measurement of optical path length changes.
• Determination of thermal diffusivity.
• Data collection across cryogenic to high temperatures (160 K to 500 K).

Main Results:

• Tabulated comprehensive thermal properties for YAG single crystals and ceramics.
• Provided numerical equations for thermal diffusivity, specific heat, thermal conductivity, linear thermal expansion coefficient, and refractive index temperature coefficient.
• Data covers the temperature range from 160 K to 500 K.

Conclusions:

• The study successfully characterized the thermal behavior of YAG across a wide temperature range.
• The derived equations enable accurate prediction of YAG thermal properties for engineering applications.
• This work provides valuable data for the development and application of YAG materials.