Radiation Defects in Aluminum Nitride-Based Ceramics

A. L. Kozlovskii; K. Dukenbaev; M. V. Zdorovets

doi:10.1134/S0018143919010077

Radiation Defects in Aluminum Nitride-Based Ceramics

A. L. Kozlovskii, K. Dukenbaev, M. V. Zdorovets

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

1 Citation (Scopus)

Abstract

Abstract: The defect formation in AlN ceramics by bombarding with Fe ⁺⁷ ions at a fluence ranging from 1 × 10 ¹¹ to 1 × 10 ¹⁴ ion/cm ² has been studied. Changes in the main crystallographic characteristics, a decrease in the Griffiths criterion, and an increased in average stress as a result of irradiation are due to the appearance of additional defects in the structure and their subsequent evolution leading to changes in the degree of crystallinity. Pyramidal hillocks with an average height of 17–20 nm are observed to form on the surface of samples irradiated with Fe ⁺⁷ ions at a fluence of 1 × 10 ¹¹ ion/cm ² .

Original language	English
Pages (from-to)	71-75
Number of pages	5
Journal	High Energy Chemistry
Volume	53
Issue number	1
DOIs	https://doi.org/10.1134/S0018143919010077
Publication status	Published - Jan 1 2019
Externally published	Yes

Keywords

ceramics
hillocks
ionizing radiation
structural properties

ASJC Scopus subject areas

Physical and Theoretical Chemistry

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10.1134/S0018143919010077

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abstract = " Abstract: The defect formation in AlN ceramics by bombarding with Fe +7 ions at a fluence ranging from 1 × 10 11 to 1 × 10 14 ion/cm 2 has been studied. Changes in the main crystallographic characteristics, a decrease in the Griffiths criterion, and an increased in average stress as a result of irradiation are due to the appearance of additional defects in the structure and their subsequent evolution leading to changes in the degree of crystallinity. Pyramidal hillocks with an average height of 17–20 nm are observed to form on the surface of samples irradiated with Fe +7 ions at a fluence of 1 × 10 11 ion/cm 2 . ",

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AU - Zdorovets, M. V.

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N2 - Abstract: The defect formation in AlN ceramics by bombarding with Fe +7 ions at a fluence ranging from 1 × 10 11 to 1 × 10 14 ion/cm 2 has been studied. Changes in the main crystallographic characteristics, a decrease in the Griffiths criterion, and an increased in average stress as a result of irradiation are due to the appearance of additional defects in the structure and their subsequent evolution leading to changes in the degree of crystallinity. Pyramidal hillocks with an average height of 17–20 nm are observed to form on the surface of samples irradiated with Fe +7 ions at a fluence of 1 × 10 11 ion/cm 2 .

AB - Abstract: The defect formation in AlN ceramics by bombarding with Fe +7 ions at a fluence ranging from 1 × 10 11 to 1 × 10 14 ion/cm 2 has been studied. Changes in the main crystallographic characteristics, a decrease in the Griffiths criterion, and an increased in average stress as a result of irradiation are due to the appearance of additional defects in the structure and their subsequent evolution leading to changes in the degree of crystallinity. Pyramidal hillocks with an average height of 17–20 nm are observed to form on the surface of samples irradiated with Fe +7 ions at a fluence of 1 × 10 11 ion/cm 2 .

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KW - ionizing radiation

KW - structural properties

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