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Local structure investigation of Co-Fe-Si-B ribbons by extended X-ray absorption fine-structure spectroscopy.
Deshmukh, A A; Srivastava, A P; Singh, J P; Kumar, Manish; Chae, K H; Asokan, K; Palikundwar, U A.
Afiliación
  • Deshmukh AA; X-ray Research Laboratory, Department of Physics, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, MS 440033, India.
  • Srivastava AP; Mechanical Metallurgy Division, Bhabha Atomic Research Centre, Mumbai, MS 400085, India.
  • Singh JP; Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 37673, Republic of Korea.
  • Kumar M; Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 37673, Republic of Korea.
  • Chae KH; Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 2792, Republic of Korea.
  • Asokan K; Inter-University Accelerator Centre (IUAC), Aruna Asaf Ali Marg, New Delhi 110 067, India.
  • Palikundwar UA; X-ray Research Laboratory, Department of Physics, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, MS 440033, India.
J Synchrotron Radiat ; 28(Pt 1): 240-246, 2021 Jan 01.
Article en En | MEDLINE | ID: mdl-33399574
In the present work, extended X-ray absorption fine-structure (EXAFS) investigations of Co69FexSi21-xB10 (x = 3, 5, 7) glassy ribbons were performed at the Co K-edge. The magnitude of the first peak of the Fourier transforms of the EXAFS signals is found to increase monotonically with increasing Si concentrations indicating the formation of the localized ordered structure at the atomic scale. The Co-Si coordination number (CN) increases at the expense of the CN of Co/Fe. Smaller interatomic distances are observed in the glassy phase compared with that in the crystalline phase which promotes the stability of the glassy phase. Calculations of the thermodynamic parameter (PHSS), cohesive energy (EC) and the atomic radius difference (δ) parameter show that the alloy composition Co69Fe3Si18B10 has a good glass-forming ability (GFA) with the highest CN of Si compared with other compositions. A linear correlation of CN with that of the GFA parameter (PHSS) exists and the CN also plays a crucial role in the GFA of the glassy alloys. This parameter should be considered in developing different GFA criteria.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Synchrotron Radiat Asunto de la revista: RADIOLOGIA Año: 2021 Tipo del documento: Article País de afiliación: India Pais de publicación: Estados Unidos
Texto completo
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Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Synchrotron Radiat Asunto de la revista: RADIOLOGIA Año: 2021 Tipo del documento: Article País de afiliación: India Pais de publicación: Estados Unidos