Magnetic properties of Mn54Al46C2.44/Sm2Fe17N3 and Mn54Al46C2.44/Fe65Co35 composites

다국어 초록 (Multilingual Abstract)

Ferromagnetic -phase Mn54Al46C2:44 particles were synthesized, and its composites with com- mercial Sm2Fe17N3 and synthesized Fe65Co35 powders were fabricated. Smaller grain size than the single domain size of the Mn54Al46C2:44 without obvious grain boundaries and secondary phases is the origin for the low intrinsic coercivity. It was confirmed that the magnetic properties of the Mn54Al46C2:44 can be enhanced by magnetic exchange coupling with the hard magnetic Sm2Fe17N3 and soft magnetic Fe65Co35. The high degrees of the exchange coupling were verified by calculat- ing first derivative curves. Thermo-magnetic stabilities of the composites from 100 to 400 K were measured and compared. It was demonstrated that the Mn54Al46C2:44 based composites containing Sm2Fe17N3 and Fe65Co35 could be promising candidates for future permanent magnetic materials with the proper control of purity, magnetic properties, etc.

참고문헌 (Reference)

1 D. Wang, 324 : 2836-, 2012

2 Y. Shen, 99 : 08B520-, 2006

3 J. H. Park, 7 : 4960-, 2017

4 A. L. Patterson, 56 : 978-, 1939

5 T. Klemmer, 33 : 1793-, 1995

6 G. F. Korznikova, 239 : 239-, 2010

7 C. W. Chen, 32 : S348-, 1961

8 A. Sakuma, 63 : 1422-, 1993

9 J. H. Park, 107 : 09A731-, 2010

10 T. Chen, 10 : 581-, 1974

11 S. M. Kim, 708 : 1245-, 2017

12 J. G. Lee, 519 : 81-, 2010

13 N. V. Rama Rao, 49 : 3255-, 2013

14 C. W. Kim, 472 : 155-, 2007

15 M. Marinescu, 103 : 07E120-, 2008

16 B. Ma, 109 : 083907-, 2011

17 T. Ohtani, MAG-13 : 1328-, 1977

18 E. F. Kneller, 27 : 3588-, 1991

19 Y. Liu, 99 : 172504-, 2011

20 H. Zeng, 85 : 792-, 2004

21 Y. Sakamoto, "U. S. Patent US4, 051, 706"

22 T. Kubo, "U. S. Patent US3, 976, 519"

23 T. Ohtani, "U. S. Patent US3, 944, 445"

24 H. Yamamoto, "U. S. Patent US3, 661, 567"