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[化学式：见原文]-Fe[化学式：见原文]O[化学式：见原文]纳米棒中的辐射诱导晶格弛豫。

Radiation-induced lattice relaxation in [Formula: see text]-Fe[Formula: see text]O[Formula: see text] nanorods.

作者信息

Khalil Ahmad M, Abdelaal Saad, Abdelhady A M, Abou-Salem L I, Shash N M, Elmaghraby Elsayed K

机构信息

Physics Department, Faculty of Science, Benha University, Banha, Egypt.

Basic Science Department, Faculty of Engineering, Sinai University, Arish, Egypt.

出版信息

Sci Rep. 2023 Sep 27;13(1):16194. doi: 10.1038/s41598-023-43332-2.

DOI:10.1038/s41598-023-43332-2
PMID:37758762
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10533876/
Abstract

We report radiation-induced lattice relaxation of the [Formula: see text]-Fe[Formula: see text]O[Formula: see text] and its associated alteration of particle morphology. The [Formula: see text]-Fe[Formula: see text]O[Formula: see text] was grown in solution by microwave hydrothermal synthesis technique in which more than half of the synthesized material was nanorods with axis along the (001) direction. Five sets of the synthesized [Formula: see text]-Fe[Formula: see text]O[Formula: see text] samples were irradiated using gamma-ray from [Formula: see text]Co cell with doses of 600 kGy, 700 kGy, 800 kGy, 900 kGy, and 1 MGy. The investigation of the pristine and gamma-irradiated samples was carried out using X-ray powder diffraction, transmission electron microscope, and electron paramagnetic resonance methods. Results showed that continuous alternation of radiation-induced lattice compression and expansion causes lattice relaxation. The morphology of the [Formula: see text]-Fe[Formula: see text]O[Formula: see text] nanorods was found to change with absorbed dose into buckyball-shaped particles in response to the alternation of the compression and expansion strain. The EPR results showed a correlation between distortion in the [Formula: see text]-[Formula: see text] octahedron structure and the relaxation of the lattice. The synthesis, growth, and relaxation are discussed in detail.

摘要

我们报道了辐射诱导的γ-Fe₂O₃晶格弛豫及其相关的颗粒形态变化。γ-Fe₂O₃通过微波水热合成技术在溶液中生长，其中超过一半的合成材料是沿（001）方向排列的纳米棒。使用⁶⁰Co源的γ射线对五组合成的γ-Fe₂O₃样品进行辐照，剂量分别为600 kGy、700 kGy、800 kGy、900 kGy和1 MGy。使用X射线粉末衍射、透射电子显微镜和电子顺磁共振方法对原始样品和γ辐照样品进行了研究。结果表明，辐射诱导的晶格压缩和膨胀的持续交替导致晶格弛豫。发现γ-Fe₂O₃纳米棒的形态随着吸收剂量的变化而转变为巴基球形状的颗粒，这是由于压缩和膨胀应变的交替所致。电子顺磁共振结果表明，Fe³⁺-O²⁻八面体结构的畸变与晶格弛豫之间存在相关性。详细讨论了合成、生长和弛豫过程。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/d4da465cd58f/41598_2023_43332_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/e12046eb4e3d/41598_2023_43332_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/2f5dc32eb0cb/41598_2023_43332_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/23583d46e9d3/41598_2023_43332_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/0c7428482858/41598_2023_43332_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/65b216cddbaf/41598_2023_43332_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/2b03e8a38576/41598_2023_43332_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/a30bf5c646a3/41598_2023_43332_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/633822f38968/41598_2023_43332_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/09d6ac0d0f92/41598_2023_43332_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/d4da465cd58f/41598_2023_43332_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/e12046eb4e3d/41598_2023_43332_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/2f5dc32eb0cb/41598_2023_43332_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/23583d46e9d3/41598_2023_43332_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/0c7428482858/41598_2023_43332_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/65b216cddbaf/41598_2023_43332_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/2b03e8a38576/41598_2023_43332_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/a30bf5c646a3/41598_2023_43332_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/633822f38968/41598_2023_43332_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/09d6ac0d0f92/41598_2023_43332_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4eda/10533876/d4da465cd58f/41598_2023_43332_Fig10_HTML.jpg

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