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Your search keyword '"Mazumdar, Chandan"' showing total 28 results
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28 results on '"Mazumdar, Chandan"'

1. Observation of charge transfer induced large enhancement of magnetic moment in a structurally disordered inverse Heusler alloy Fe2RuGe

Author

Chakraborty, Sudip, primary, Gupta, Shuvankar, additional, Bhasin, Vidha, additional, Pakhira, Santanu, additional, Barreteau, Céline, additional, Crivello, Jean-Claude, additional, Jha, Shambhu Nath, additional, Bhattacharyya, Dibyendu, additional, Avdeev, Maxim, additional, Paul-Boncour, Valérie, additional, Greneche, Jean-Marc, additional, Alleno, Eric, additional, and Mazumdar, Chandan, additional

Published
2023
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2. Origin of magnetic ordering in half-Heusler RuMnGa

Author

Chakraborty, Sudip, primary, Gupta, Shuvankar, additional, Pakhira, Santanu, additional, Biswas, Anis, additional, Mudryk, Yaroslav, additional, Choudhary, Renu, additional, Kumar, Amit, additional, Das, Amitabh, additional, and Mazumdar, Chandan, additional

Published
2023
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3. 4d element induced improvement of structural disorder and development of weakly reentrant spin-glass behavior in NiRuMnSn

Author

Gupta, Shuvankar, primary, Chakraborty, Sudip, additional, Bhasin, Vidha, additional, Pakhira, Santanu, additional, Biswas, Anis, additional, Mudryk, Yaroslav, additional, Kumar, Amit, additional, Barreteau, Celine, additional, Crivello, Jean-Claude, additional, Das, Amitabh, additional, Jha, S. N., additional, Bhattacharyya, D., additional, Pecharsky, Vitalij K., additional, Alleno, Eric, additional, and Mazumdar, Chandan, additional

Published
2023
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4. High spin polarization in the disordered quaternary Heusler alloy FeMnVGa

Author

Gupta, Shuvankar, primary, Chakraborty, Sudip, additional, Bhasin, Vidha, additional, Pakhira, Santanu, additional, Dan, Shovan, additional, Barreteau, Celine, additional, Crivello, Jean-Claude, additional, Jha, S. N., additional, Avdeev, Maxim, additional, Greneche, Jean-Marc, additional, Bhattacharyya, D., additional, Alleno, Eric, additional, and Mazumdar, Chandan, additional

Published
2023
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15. Metal-insulator crossover behavior at the surface ofNiS2

Author

Sarma, D. D., primary, Krishnakumar, S. R., additional, Weschke, E., additional, Schüßler-Langeheine, C., additional, Mazumdar, Chandan, additional, Kilian, L., additional, Kaindl, G., additional, Mamiya, K., additional, Fujimori, S.-I., additional, Fujimori, A., additional, and Miyadai, T., additional

Published
2003
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18. Magnetically ordered surface oxide on Gd(0001)

Author

Schüßler-Langeheine, C., primary, Meier, R., additional, Ott, H., additional, Hu, Z., additional, Mazumdar, Chandan, additional, Grigoriev, A. Yu., additional, Kaindl, G., additional, and Weschke, E., additional

Published
1999
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23. Structural, superconducting, and magnetic properties ofYNi2B2C andErNi2B2C

Author

Godart, C., primary, Gupta, L. C., additional, Nagarajan, R., additional, Dhar, S. K., additional, Noel, H., additional, Potel, M., additional, Mazumdar, Chandan, additional, Hossain, Zakir, additional, Levy-Clement, C., additional, Schiffmacher, G., additional, Padalia, B. D., additional, and Vijayaraghavan, R., additional

Published
1995
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25. Valence states of Sm inSmRuSn3

Author

Chinchure, Aravind D., primary, Mazumdar, Chandan, additional, Marathe, V.R., additional, Nagarajan, R., additional, Gupta, L.C., additional, and Shah, S.S., additional

Published
1994
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26. Valence state of Sm inSmRuSn3

Author

Godart, C., primary, Mazumdar, Chandan, additional, Dhar, S. K., additional, Nagarajan, R., additional, Gupta, L. C., additional, Padalia, B. D., additional, and Vijayaraghavan, R., additional

Published
1993
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28. Large magnetic cooling power involving frustrated antiferromagnetic spin-glass state in R2NiSi3(R=Gd,Er).

Author

Pakhira, Santanu, Mazumdar, Chandan, Ranganathan, R., Giri, S., and Avdeev, Maxim

Subjects
*MAGNETIC cooling, *ANTIFERROMAGNETIC materials, *SPIN glasses, *MAGNETIZATION, *MAGNETIC susceptibility, *NEUTRON diffraction
Abstract

The ternary intermetallic compounds Gd2NiSi3 and Er2NiSi3 are synthesized in chemically single phase, which are characterized using dc magnetization, ac magnetic susceptibility, heat capacity, and neutron diffraction studies. Neutron diffraction and heat capacity studies confirm that long-range magnetic ordering coexists with the frustrated glassy magnetic components for both compounds. The static and dynamical features of dc magnetization and frequency-dependent ac susceptibility data reveal that Gd2NiSi3 is a canonical spin-glass system, while Er2NiSi3 is a reentrant spin cluster-glass system. The spin freezing temperature merges with the long-range antiferromagnetic ordering temperature at 16.4 K for Gd2NiSi3. Er2NiSi3 undergoes antiferromagnetic ordering at 5.4 K, which is slightly above the spin freezing temperature at 3 K. The detailed studies of nonequilibrium dynamical behavior, viz., the memory effect and relaxation behavior using different protocols, suggest that both compounds favor the hierarchical model over the droplet model. A large magnetocaloric effect is observed for both compounds. Maximum values of isothermal entropy change (-ΔSM) and relative cooling power (RCP) are found to be 18.4 J/kg K and 525 J/kg for Gd2NiSi3 and 22.6 J/kg K and 540 J/kg for Er2NiSi3, respectively, for a change in field from 0 to 70 kOe. The values of RCP are comparable to those of the promising refrigerant materials. A correlation between large RCP and magnetic frustration is discussed for developing new magnetic refrigerant materials. [ABSTRACT FROM AUTHOR]

Published
2016
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