We have modeled the reflow process of FeCo magnetic nanoparticle (MNP)-based solder composites with eddy current power loss of substrate and magnetic power losses of solder bumps. For an area array package without MNPs when subjected to 300 kHz ac magnetic field, the eddy current power loss can result in excessive temperatures that can cause substrate damage. Temperature profiles with different MNP concentration were simulated and the results showed localized reflow of solders to enable low-temperature assembly. The temperatures at different times and positions in solder composites were analyzed. We also modeled thermal profiles for solder composites with 0.2 wt. % MNP in 1 MHz and 3 MHz magnetic field. Such high field frequency generated larger power losses in MNPs and is shown to increase the heating efficiency.

Topics
Thermal conductivity, Magnetic materials, Eddy current, Phase transitions, Magnetic fields, Thermodynamic states and processes, Printed circuit board, Alloys, Nanocomposites, Nanoparticle
1.
A. H.
 
Habib
,
S.
 
Xu
,
E.
 
Walker
,
M.
 
Ondeck
,
R.
 
Swaminathan
, and
M. E.
 
McHenry
,
J. Appl. Phys.
 
111
,
07B305
(
2012
).
https://doi.org/10.1063/1.3671407
Google Scholar
Crossref
Search ADS
 
2.
D.
 
Shangguan
,
Lead-Free Solder Interconnect Reliability
(
ASM International
,
2005
).
Google Scholar
 
3.
A. H.
 
Habib
,
M. G.
 
Ondeck
,
K. J.
 
Miller
,
R.
 
Swaminathan
, and
M. E.
 
McHenry
,
IEEE Trans. Magn.
 
46
(
6
),
2187
–
2190
(
2010
).
https://doi.org/10.1109/TMAG.2010.2044640
Google Scholar
Crossref
Search ADS
 
4.
D. R.
 
Frear
,
J. Mater. Sci.
 
18
,
319
(
2007
).
https://doi.org/10.1007/s10854-006-9021-7
Google Scholar
Crossref
Search ADS
 
5.
M.
 
Li
,
H.
 
Xu
,
S.-W. R.
 
Lee
,
J.
 
Kim
, and
D.
 
Kim
,
IEEE Trans. Adv. Packag.
 
31
(
2
),
399
–
403
(
2008
).
https://doi.org/10.1109/TADVP.2008.923385
Google Scholar
Crossref
Search ADS
 
6.
A. H.
 
Habib
,
C. L.
 
Ondeck
,
P.
 
Chaudhary
,
M. R.
 
Bockstaller
, and
M. E.
 
McHenry
,
J. Appl. Phys.
 
103
,
07A307
(
2008
).
https://doi.org/10.1063/1.2830975
Google Scholar
Crossref
Search ADS
 
7.
K. N.
 
Collier
,
N. J.
 
Jones
,
K. J.
 
Miller
,
Y. L.
 
Qin
,
D. E.
 
Laughlin
, and
M. E.
 
McHenry
,
J. Appl. Phys.
 
105
,
07A328
(
2009
).
https://doi.org/10.1063/1.3054376
Google Scholar
Crossref
Search ADS
 
8.
K. J.
 
Miller
,
A.
 
Colleti
,
P. J.
 
Papi
, and
M. E.
 
McHenry
,
J. Appl. Phys.
 
107
,
09A313
(
2010
).
https://doi.org/10.1063/1.3349043
Google Scholar
Crossref
Search ADS
 
9.
K. J.
 
Miller
,
K. N.
 
Collier
,
H. B.
 
Soll-Morris
,
R.
 
Swaminathan
, and
M. E.
 
McHenry
,
J. Appl. Phys.
 
105
,
07E714
(
2009
).
https://doi.org/10.1063/1.3073833
Google Scholar
Crossref
Search ADS
 
10.
C. A.
 
Sawyer
,
A. H.
 
Habib
,
K.
 
Miller
,
K. N.
 
Collier
,
C. L.
 
Ondeck
, and
M. E.
 
McHenry
,
J. Appl. Phys.
 
105
,
07B320
(
2009
).
https://doi.org/10.1063/1.3077211
Google Scholar
Crossref
Search ADS
 
11.
C. L.
 
Ondeck
,
A. H.
 
Habib
,
P.
 
Ohodnicki
,
K.
 
Miller
,
C. A.
 
Sawyer
,
P.
 
Chaudhary
, and
M. E.
 
McHenry
,
J. Appl. Phys.
 
105
,
07B324
(
2009
).
https://doi.org/10.1063/1.3076043
Google Scholar
Crossref
Search ADS
 
12.
Z.
 
Turgut
,
N. T.
 
Nuhfer
,
H. R.
 
Piehler
, and
M. E.
 
McHenry
,
J. Appl. Phys.
 
85
,
4406
–
4408
(
1999
).
https://doi.org/10.1063/1.369799
Google Scholar
Crossref
Search ADS
 
13.
M. E.
 
McHenry
,
M. A.
 
Willard
, and
D. E.
 
Laughlin
,
Prog. Mater. Sci.
 
44
(
4
),
291
–
433
(
1999
).
https://doi.org/10.1016/S0079-6425(99)00002-X
Google Scholar
Crossref
Search ADS
 
14.
R. C.
 
O'Handley
,
Modern Magnetic Materials: Principles and Applications
(
John-Wiley and Sons
,
New York
,
2000
).
Google Scholar
 
15.
N. J.
 
Siakavellas
,
IEEE Trans. Magn.
 
33
(
3
),
2245
–
2257
(
1997
).
https://doi.org/10.1109/20.573839
Google Scholar
Crossref
Search ADS
 
16.
M. E.
 
McHenry
,
S. A.
 
Majetich
,
M. J.
 
De Graef
,
J. O.
 
Artman
, and
S.
 
Staley
,
Phys. Rev. B
 
49
,
11358
–
11363
(
1994
).
https://doi.org/10.1103/PhysRevB.49.11358
Google Scholar
Crossref
Search ADS
 
17.
R. E.
 
Rosensweig
,
J. Magn. Magn. Mater.
 
252
,
370
–
374
(
2002
).
https://doi.org/10.1016/S0304-8853(02)00706-0
Google Scholar
Crossref
Search ADS
 
18.
F.
 
Kreith
,
R. M.
 
Manglik
, and
M. S.
 
Bohn
,
Principles of Heat Transfer
(
CL Engineering
,
2010
).
Google Scholar
 
19.
A. D.
 
Podoltsev
,
I. N.
 
Kucheryavaya
, and
B. B.
 
Lebedev
,
IEEE Trans. Magn.
 
39
(
1
),
539
–
548
(
2003
).
https://doi.org/10.1109/TMAG.2002.806337
Google Scholar
Crossref
Search ADS
 
20.
K. L.
 
McNerny
,
Y.
 
Kim
,
D. E.
 
Laughlin
, and
M. E.
 
McHenry
,
J. Appl. Phys.
 
107
,
09A312
–
14
(
2010
).
https://doi.org/10.1063/1.3348738
Google Scholar
Crossref
Search ADS
 
21.
H.
 
Ucar
,
J. J.
 
Ipus
,
D. E.
 
Laughlin
, and
M. E.
 
McHenry
, “
Tuning the curie temperature of γ-FeNi nanoparticles for magnetocaloric applications by controlling the oxidation kinetics
,”
J. Appl. Phys.
(to be published).
© 2013 American Institute of Physics.
2013
American Institute of Physics
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