Materials Map

Discover the materials research landscape. Find experts, partners, networks.

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The Materials Map is an open tool for improving networking and interdisciplinary exchange within materials research. It enables cross-database search for cooperation and network partners and discovering of the research landscape.

The dashboard provides detailed information about the selected scientist, e.g. publications. The dashboard can be filtered and shows the relationship to co-authors in different diagrams. In addition, a link is provided to find contact information.

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The Materials Map is still under development. In its current state, it is only based on one single data source and, thus, incomplete and contains duplicates. We are working on incorporating new open data sources like ORCID to improve the quality and the timeliness of our data. We will update Materials Map as soon as possible and kindly ask for your patience.

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in Cooperation with on an Cooperation-Score of 37%

Topics

Publications (3/3 displayed)

  • 2023Microstructure evolution and phase analysis of Sm60Ni40 alloycitations
  • 2023Microstructure evolution and phase analysis of Sm<SUB>60</SUB>Ni<SUB>40</SUB> alloycitations
  • 2019Structure and Magnetic Properties of Heat-Resistant Sm(Co0.796−xFe0.177CuxZr0.027)6.63 Permanent Magnets with High Coercivity9citations

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Chart of shared publication
Pradeep, K. G.
2 / 24 shared
Vijayaragavan, G.
2 / 3 shared
Meher, K. R. S. Preethi
1 / 1 shared
Gautam, Ravi
2 / 2 shared
Prabhu, D.
2 / 5 shared
Ponnuchamy, M. B.
2 / 3 shared
Preethi Meher, K. R. S.
1 / 2 shared
Gaviko, V. S.
1 / 3 shared
Sharin, M. K.
1 / 1 shared
Ogurtsov, A. V.
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Popov, A. G.
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Protasov, A. V.
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Golovnia, O. A.
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Gerasimov, E. G.
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2019

Co-Authors (by relevance)

  • Pradeep, K. G.
  • Vijayaragavan, G.
  • Meher, K. R. S. Preethi
  • Gautam, Ravi
  • Prabhu, D.
  • Ponnuchamy, M. B.
  • Preethi Meher, K. R. S.
  • Gaviko, V. S.
  • Sharin, M. K.
  • Ogurtsov, A. V.
  • Popov, A. G.
  • Protasov, A. V.
  • Golovnia, O. A.
  • Gerasimov, E. G.
OrganizationsLocationPeople

article

Structure and Magnetic Properties of Heat-Resistant Sm(Co0.796−xFe0.177CuxZr0.027)6.63 Permanent Magnets with High Coercivity

  • Gaviko, V. S.
  • Gopalan, R.
  • Sharin, M. K.
  • Ogurtsov, A. V.
  • Popov, A. G.
  • Protasov, A. V.
  • Golovnia, O. A.
  • Gerasimov, E. G.
Abstract

<p>The structure and temperature stability of high-temperature permanent magnets Sm(Co<sub>0.796−x</sub>Fe<sub>0.177</sub>Cu<sub>x</sub>Zr<sub>0.027</sub>)<sub>6.63</sub> (x = 0.117 and 0.130) were studied using x-ray diffraction analysis, thermomagnetic analysis, and scanning and transmission electron microscopy. The magnets have a nanocrystalline cellular structure composed of the R2:17 cell phase, 1:5 boundary phase (27–28% by volume), and Z-phase platelets. The 1:5 phase is formed in the course of isothermal annealing at 850°C and exists in the entire temperature range from 850°C to 400°C. The Curie temperature of the R2:17 and 1:5 phases is approximately 815°C and 580°C, respectively. The magnets have the following hysteresis properties at room temperature: B<sub>r</sub> = 890–920 mT, <sub>J</sub>H<sub>c</sub> = 2.4–2.6 MA/m, <sub>B</sub>H<sub>c</sub> = 629–676 kA/m, and (BH)<sub>m</sub> = 143–159 kJ/m<sup>3</sup>. In the temperature range of 20–500°C, the temperature coefficients of B<sub>r</sub> and <sub>J</sub>H<sub>c</sub> of the magnets (x = 0.117 and 0.130) do not exceed |− 0.070| and |− 0.172|%/°C, respectively.</p>

Topics
  • impedance spectroscopy
  • phase
  • x-ray diffraction
  • transmission electron microscopy
  • annealing
  • coercivity
  • Curie temperature