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Abstract <p>We present an improved theoretical model for the lattice thermal conductivity of binary compounds, grounded in the latest understanding of phonon scattering mechanisms. The model enables quantitative evaluation of the effects of temperature and isotopic composition on thermal transport. It shows excellent agreement with available experimental and computational data for cubic boron nitride (cBN). Using this framework, we analyze for the first time the influence of <sup>15</sup>N isotope concentration on the thermal conductivity of cBN.</p>

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Effect of the 15N Isotope on the Lattice Thermal Conductivity of Cubic Boron Nitride

  • 期刊论文

  • 发表日期：

    2025年10月20日

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  • O. P. Podoba,
  • S. V. Shmegera,
  • V. I. Kushch

摘要

Abstract

We present an improved theoretical model for the lattice thermal conductivity of binary compounds, grounded in the latest understanding of phonon scattering mechanisms. The model enables quantitative evaluation of the effects of temperature and isotopic composition on thermal transport. It shows excellent agreement with available experimental and computational data for cubic boron nitride (cBN). Using this framework, we analyze for the first time the influence of 15N isotope concentration on the thermal conductivity of cBN.