PreprintCC BY 4.0arXiv
HPHT growth of centimeter-sized cubic boron nitride crystals
Abstract
Single crystals of cubic boron nitride (cBN) exceeding 10 mm in size were grown by the high-pressure high-temperature (HPHT) temperature-gradient method using a Ni-Cr-based solvent catalyst. Compared with the previously reported maximum crystal size of approximately 3 mm, this improvement was achieved by maintaining a stable precursor flux during one week of growth at a source temperature of 1950 °C. In contrast to diamonds, which were grown with the same HPHT cell and showed nearly isometric shapes, the cBN crystals had elongated shapes. We attribute this cBN morphology to a localized growth near the BN source due to the relatively low effective diffusivity of boron and nitrogen species in the metallic solvent.
Versions
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BibTeX
@misc{katrusha2026hpht,
title = {{HPHT growth of centimeter-sized cubic boron nitride crystals}},
author = {Andrey Katrusha and Weihua Peng and Jianguo Peng and Konstantin Iakoubovskii},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2608.05058},
eprint = {2608.05058},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2608.05058},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - HPHT growth of centimeter-sized cubic boron nitride crystals
AU - Andrey Katrusha
AU - Weihua Peng
AU - Jianguo Peng
AU - Konstantin Iakoubovskii
PY - 2026
DA - 2026/10/09
PB - arXiv
DO - 10.48550/arxiv.2608.05058
UR - https://arxiv.org/abs/2608.05058
AB - Single crystals of cubic boron nitride (cBN) exceeding 10 mm in size were grown by the high-pressure high-temperature (HPHT) temperature-gradient method using a Ni-Cr-based solvent catalyst. Compared with the previously reported maximum crystal size of approximately 3 mm, this improvement was achieved by maintaining a stable precursor flux during one week of growth at a source temperature of 1950 °C. In contrast to diamonds, which were grown with the same HPHT cell and showed nearly isometric shapes, the cBN crystals had elongated shapes. We attribute this cBN morphology to a localized growth near the BN source due to the relatively low effective diffusivity of boron and nitrogen species in the metallic solvent.
ER -