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High temperature annealing effect on structural and magnetic properties of Ti/Ni multilayer
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- Bhatt, Pramod (author)
- Linköpings universitet,Institutionen för teknik och naturvetenskap,Tekniska högskolan
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- Ganeshan, V. (author)
- UGC-DAE Consortium for Scientific Research, Indore, India
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- Reddy, V. R. (author)
- UGC-DAE Consortium for Scientific Research, Indore, India
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- Elsevier BV, 2006
- 2006
- English.
- In: Applied Surface Science. - : Elsevier BV. - 0169-4332. ; 253:5, s. 2572-2580
- Journal article (peer-reviewed)
Abstract
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- High temperature annealing effect on structural and magnetic properties of Ti/Ni multilayer (ML) up to 600 °C have been studied and reported in this paper. Ti/Ni multilayer samples having constant layer thicknesses of 50 Å each are deposited on float glass and Si(1 1 1) substrates using electron-beam evaporation technique under ultra-high vacuum (UHV) conditions at room temperatures. The micro-structural parameters and their evolution with temperature for as-deposited as well as annealed multilayer samples up to 600 °C in a step of 100 °C for 1 h are determined by using X-ray diffraction (XRD) and grazing incidence X-ray reflectivity techniques. The X-ray diffraction pattern recorded at 300 °C annealed multilayer sample shows interesting structural transformation (from crystalline to amorphous) because of the solid-state reaction (SSR) and subsequent re-crystallization at higher temperatures of annealing, particularly at ≥400 °C due to the formation of TiNi3 and Ti2Ni alloy phases. Sample quality and surface morphology are examined by using atomic force microscopy (AFM) technique for both as-deposited as well as annealed multilayer samples. In addition to this, a temperature dependent dc resistivity measurement is also used to study the structural transformation and subsequent alloy phase formation due to annealing treatment. The corresponding magnetization behavior of multilayer samples after each stage of annealing has been investigated by using Magneto-Optical Kerr Effect (MOKE) technique and results are interpreted in terms of observed micro-structural changes.
Keyword
- Ti/Ni multilayer structure; Annealing effect; Interfaces properties; Magnetization measurements; Resistivity measurements
- NATURAL SCIENCES
- NATURVETENSKAP
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- art (subject category)
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- Bhatt, Pramod
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