Modification of Fe/Cu multilayers under 400 keV Xe<SUP>20+ </SUP>irradiation

WEI Kong-Fang; WANG Zhi-Guang; LIU Chun-Bao; ZANG Hang; YAO Cun-Feng; SHENG Yan-Bin; MA Yi-Zhun; SONG Yin; LU Zi-Wei

Chinese Physics C> 2008, Vol. 32> Issue(S2) : 262-264

Modification of Fe/Cu multilayers under 400 keV Xe²⁰⁺irradiation

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Abstract：
Two kinds of Fe/Cu multilayers with different modulation wavelength were deposited on cleaved Si(100) substrates and then irradiated at room temperature using 400 keV Xe²⁰⁺ in a wide range of irradiation fluences. As a comparison, thermal annealing at 300—900℃ was also carried out in vacuum. Then the samples were analyzed by XRD and the evolution of crystallite structures induced by irradiation was investigated. The obtained XRD patterns showed that, with increase of the irradiation fluence, the peaks of Fe became weaker, the peaks related to Cu-based fcc solid solution and Fe-based bcc solid solution phase became visible and the former became strong gradually. This implied that the intermixing at the Fe/Cu interface induced by ion irradiation resulted in the formation of the new phases which could not be achieved by thermal annealing. The possible intermixing mechanism of Fe/Cu multilayers induced by energetic ion irradiation was briefly discussed.

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WEI Kong-Fang, WANG Zhi-Guang, LIU Chun-Bao, ZANG Hang, YAO Cun-Feng, SHENG Yan-Bin, MA Yi-Zhun, SONG Yin and LU Zi-Wei. Modification of Fe/Cu multilayers under 400 keV Xe²⁰⁺irradiation[J]. Chinese Physics C, 2008, 32(S2): 262-264.

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Received: 2008-07-17
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Modification of Fe/Cu multilayers under 400 keV Xe²⁰⁺irradiation

Corresponding author: WEI Kong-Fang,

Received Date: 2008-07-17

Accepted Date: 1900-01-01

Available Online: 2008-01-03

Abstract: Two kinds of Fe/Cu multilayers with different modulation wavelength were deposited on cleaved Si(100) substrates and then irradiated at room temperature using 400 keV Xe²⁰⁺ in a wide range of irradiation fluences. As a comparison, thermal annealing at 300—900℃ was also carried out in vacuum. Then the samples were analyzed by XRD and the evolution of crystallite structures induced by irradiation was investigated. The obtained XRD patterns showed that, with increase of the irradiation fluence, the peaks of Fe became weaker, the peaks related to Cu-based fcc solid solution and Fe-based bcc solid solution phase became visible and the former became strong gradually. This implied that the intermixing at the Fe/Cu interface induced by ion irradiation resulted in the formation of the new phases which could not be achieved by thermal annealing. The possible intermixing mechanism of Fe/Cu multilayers induced by energetic ion irradiation was briefly discussed.

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Modification of Fe/Cu multilayers under 400 keV Xe²⁰⁺irradiation

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Modification of Fe/Cu multilayers under 400 keV Xe20+ irradiation

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Modification of Fe/Cu multilayers under 400 keV Xe20+ irradiation

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Modification of Fe/Cu multilayers under 400 keV Xe²⁰⁺irradiation

Modification of Fe/Cu multilayers under 400 keV Xe²⁰⁺irradiation