Multiphase nano-structured permanent magnets show a high thermal stability of remanence and a high energy product while the amount of rare-earth elements is reduced. Non-zero temperature micromagnetic simulations show that a temperature coefficient of remanence of −0.073%/K and that an energy product greater than 400 kJ/m3 can be achieved at a temperature of 450 K in a magnet containing around 40 volume percent Fe65Co35 embedded in a hard magnetic matrix.
References
1.
O.
Gutfleisch
, M. A.
Willard
, E.
Brück
, C. H.
Chen
, S. G.
Sankar
, and J. P.
Liu
, Adv. Mater.
23
, 821
(2011
).2.
R.
Skomski
and J. M. D.
Coey
, Phys. Rev. B
48
, 15812
(1993
).3.
J. M. D.
Coey
, IEEE Trans. Magn.
47
, 4671
(2011
).4.
R.
Skomski
, P.
Manchanda
, P.
Kumar
, B.
Balamurugan
, A.
Kashyap
, and D.
Sellmyer
, IEEE Trans. Magn.
49
, 3215
(2013
).5.
T.
Schrefl
, H.
Kronmüller
, and J.
Fidler
, J. Magn. Magn. Mater.
127
, L273
(1993
).6.
B.
Balamurugan
, D. J.
Sellmyer
, G. C.
Hadjipanayis
, and R.
Skomski
, Scr. Mater.
67
, 542
(2012
).7.
H.
Sepehri-Amin
, T.
Ohkubo
, S.
Nagashima
, M.
Yano
, T.
Shoji
, A.
Kato
, T.
Schrefl
, and K.
Hono
, Acta Mater.
61
, 6622
(2013
).8.
M. H.
Ghandehari
and J.
Fidler
, Mater. Lett.
5
, 285
(1987
).9.
H.
Nakamura
, K.
Hirato
, M.
Shimano
, T.
Minowa
, and M.
Honshima
, IEEE Trans. Magn.
41
, 3844
(2005
).10.
B.
Balasubramanian
, P.
Mukherjee
, R.
Skomski
, P.
Manchanda
, B.
Das
, and D. J.
Sellmyer
, Sci. Rep.
4
, 6265
(2014
).11.
G.
Hrkac
, T.
Woodcock
, C.
Freeman
, A.
Goncharov
, J.
Dean
, T.
Schrefl
, and O.
Gutfleisch
, Appl. Phys. Lett.
97
, 232511
(2010
).12.
S.
Bance
, H.
Oezelt
, T.
Schrefl
, G.
Ciuta
, N. M.
Dempsey
, D.
Givord
, M.
Winklhofer
, G.
Hrkac
, G.
Zimanyi
, O.
Gutfleisch
, T. G.
Woodcock
, T.
Shoji
, M.
Yano
, A.
Kato
, and A.
Manabe
, Appl. Phys. Lett.
104
, 182408
(2014
).13.
14.
R.
Skomski
, P.
Kumar
, G. C.
Hadjipanayis
, and D. J.
Sellmyer
, IEEE Trans. Magn.
49
, 3229
(2013
).15.
M.
Kirschner
, T.
Schrefl
, F.
Dorfbauer
, G.
Hrkac
, D.
Suess
, and J.
Fidler
, J. Appl. Phys.
97
, 10E301
(2005
).16.
S.
Hock
, “Züchtung und magnetische Eigenschaften von (Fe,Al)14(Nd,Dy)2B-Einkristallen
,” Ph.D. thesis (Universität Stuttgart
, 1988
).17.
K.
Durst
and H.
Kronmüller
, J. Magn. Magn. Mater.
59
, 86
(1986
).18.
O.
Isnard
, S.
Miraglia
, M.
Guillot
, and D.
Fruchart
, J. Appl. Phys.
75
, 5988
(1994
).19.
J.
Coey
, Magnetism and Magnetic Materials
(Cambridge University Press
, Cambridge
, 2010
).20.
K.
Muller
and D.
Eckert
, IEEE Trans. Magn.
30
, 586
(1994
).21.
K.
Kawahara
, D.
Iemura
, S.
Tsurekawa
, and T.
Watanabe
, Mater. Trans.
44
, 2570
(2003
).22.
C.
Mathieu
, H.-J.
Liu
, K. S.
Buchanan
, and V. R.
Inturi
, J. Appl. Phys.
111
, 07A306
(2012
).23.
C.
Abert
, L.
Exl
, G.
Selke
, A.
Drews
, and T.
Schrefl
, J. Magn. Magn. Mater.
326
, 176
(2013
).24.
M. E.
Schabes
and H. N.
Bertram
, J. Appl. Phys.
64
, 1347
(1988
).25.
C.
Serpico
, I. D.
Mayergoyz
, and G.
Bertotti
, J. Appl. Phys.
89
, 6991
(2001
).26.
I.
Loris
, M.
Bertero
, C. D.
Mol
, R.
Zanella
, and L.
Zanni
, Appl. Comput. Harmonic Anal.
27
, 247
(2009
).27.
L.
Exl
, S.
Bance
, F.
Reichel
, T.
Schrefl
, H. Peter
Stimming
, and N. J.
Mauser
, J. Appl. Phys.
115
, 17D118
(2014
).28.
E.
Kneller
and R.
Hawig
, IEEE Trans. Magn.
27
, 3588
(1991
).29.
E.
Fullerton
, J.
Jiang
, and S.
Bader
, J. Magn. Magn. Mater.
200
, 392
(1999
).30.
V. D.
Tsiantos
, T.
Schrefl
, W.
Scholz
, and J.
Fidler
, J. Appl. Phys.
93
, 8576
(2003
).31.
M.
Schabes
, J. Magn. Magn. Mater.
95
, 249
(1991
).32.
E.
Weinan
, W.
Ren
, and E.
Vanden-Eijnden
, J. Chem. Phys.
126
, 164103
(2007
).33.
E.
Plan
, “Parametrization and modifications for the string method
,” Ph.D. thesis (National University of Singapore
, 2013
).34.
R.
Dittrich
, T.
Schrefl
, D.
Suess
, W.
Scholz
, H.
Forster
, and J.
Fidler
, J. Magn. Magn. Mater.
250
, 12
(2002
).35.
W.
Rave
, K.
Ramstöck
, and A.
Hubert
, J. Magn. Magn. Mater.
183
, 329
(1998
).36.
M.-D.
Calin
and E.
Helerea
, in 2011 7th International Symposium on Advanced Topics in Electrical Engineering (ATEE)
(2011
), pp. 1
–6
.© 2014 AIP Publishing LLC.
2014
AIP Publishing LLC
You do not currently have access to this content.
