Synthesis and Characterization of Nanocrystalline High Entropy Heusler Intermetallics Powders

다국어 초록 (Multilingual Abstract)

This study demonstrates the possibility of bringing novel Full Heusler high-entropy intermetallic compounds (FH-HEICs)to nanoscale regime. To this end, Co2(FeNiMnMgZn)Al, Co2(TiZrTaNbCr)Al and Cr2(TiZrTaNbV)(AlSi) FH-HEICs areprepared by mechanical alloying for 20 h. All FH-HEICs crystallize in a mixture of partially ordered B2-type and disorderedA2-type crystal structures, which exhibit higher degree of disordering compared to the ideal L21 structure. Scanningelectron microscope micrographs and Energy dispersive spectroscopy mapping confirm the homogenous distribution ofelements within the nanocrystalline particles. Co2(FeNiMnMgZn)Al and Co2(TiZrTaNbCr)Al exhibited semi hard magneticbehavior with magnetic saturation of 50.93 emu/g and 18.73 emu/g at 300 K, respectively. Cr2(TiZrTaNbV)(AlSi)exhibited hard magnetic behavior with giant coercivity of 3.5 kOe and low magnetic saturation of about 0.2 emu/g. Finally,we introduce FH-HEICs as a novel group of functional materials with potentially intricate magnetic and catalytic properties,in which the order-disorder transition and wide chemical composition range provide unprecedented opportunity totune their structural and functional properties.

참고문헌 (Reference)

1 T. Graf, 39 : 1-, 2011

2 V. Chaudhary, 49 : 231-, 2021

3 A. Ahmad, 474 : 599-, 2019

4 G. E. Bacon, 1 : 524-, 1971

5 A. Difalco, 918 : 165464-, 2022

6 M. Gabor, 92 : 054433-, 2015

7 Y. S. Koshkid’ko, 904 : 164051-, 2022

8 Y. El Krimi, 121 : 108207-, 2020

9 S. Biswas, 3 : 4522-, 2021

10 S. Mehrabi-Kalajahi, 10 : 14488-, 2022

11 A. Ostovari Moghaddam, 851 : 156838-, 2021

12 Piyush Kumar ; Reliance Jain ; M. R. Rahul ; Abhijit Ghosh ; Sumanta Samal ; Gandham Phanikumar, 29 : 2500-, 2023

13 Shougang Duan ; Yufeng Yang ; Yong Dong ; Yu Wang ; Beibei Jiang ; Chuanqiang Li ; Zhengrong Zhang, 29 : 1614-, 2023

14 K. Raja Rao ; Sheetal Kumar Dewangan ; A. H. Seikh ; Sudip Kumar Sinha ; Byungmin Ahn, 2023

15 A. Ostovari Moghaddam, 927 : 167102-, 2022

16 A. Ostovari Moghaddam, 146 : 107591-, 2022

17 A. Ostovari Moghaddam, 912 : 165195-, 2022

18 E. Trofimov, 301 : 127596-, 2023

19 E. Trofimov, 335 : 133861-, 2023

20 A. O. Moghaddam, 159 : 107917-, 2023

21 M. Hakimi, 322 : 3443-, 2010

22 Y. Srivastava, 433 : 141-, 2017

23 S. Maier, 121 : 126-, 2016

24 B. Balke, 90 : 172501-, 2007

25 H. Ishikawa, 56 : 4789-, 2008

26 Y. Srivastava, 462 : 195-, 2018