Supplementary Information
Assembling non-ferromagnetic materials to ferromagnetic architectures using metal-semiconductor interfaces Ji Ma, Chunting Liu, and Kezheng Chen*
Lab of Functional and Biomedical Nanomaterials, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
* To whom correspondence should be addressed. Tel: +86-532-84022509. Fax: +86-532-84022509. E-Mail:
[email protected]
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Fish bone-like
♦ (103)
Golfball-like
♦ (112)
♦ (110)
♦ (102)
♦ (100) ♦ (002) ♦ (101)
Intensity (a.u.)
♦ (311) • (220)
♦ (220)
Pteridophyte-like
(b)
• (111)
♦ ZnO (JCPDS: 65-3411) • Cu (JCPDS: 85-1326)
• (200)
♦ Cu2O (JCPDS: 78-2076) • Cu (JCPDS: 85-1326) • (200)
• (111) ♦ (200)
♦ (111)
Poplar flower-like
♦ (110)
Intensity (a.u.)
(a)
Cotton-like 10
20
30
40
50
2θ (degree)
60
70
80
10
20
30
40
50
60
70
2θ (degree)
Figure S1 XRD patterns of the as-synthesized (a) Cu@Cu2O, and (b) Cu@ZnO and Cu products.
(a)
(c)
2.08 Å [111]Cu
[200]Cu 500 nm
[111]Cu2O
1.81 Å
(b)
2.46 Å
Figure S2 (a) TEM image, (b) SAED pattern and (c) HRTEM image of fish bone-like Cu@Cu2O product.
2
(c)
(a)
[111]Cu
[110]Cu2O
2.08 Å
2.95 Å 2.96 Å
[110]Cu2O
(b)
10 nm
Figure S3 (a) TEM image, (b) SAED pattern and (c) HRTEM image of pteridophyte-like Cu@Cu2O product.
(a)
(c)
2.98 Å
[110]Cu2O
500 nm
(b)
2.08 Å
[111]Cu
Figure S4 (a) TEM image, (b) SAED pattern and (c) HRTEM image of poplar flower-like Cu@Cu2O product.
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(a)
(c)
1 µm
(b)
2.99 Å [110]Cu2O
2.09 Å [111]Cu 2 nm
Figure S5 (a) TEM image, (b) SAED pattern and (c) HRTEM image of cotton-like Cu@Cu2O product. (a)
(c) 2.78 Å
[100]ZnO 100 nm
(b) 2.11 Å
[111]Cu
2.82 Å [100]ZnO
2 nm
Figure S6 (a) TEM image, (b) SAED pattern and (c) HRTEM image of golfball-like Cu@ZnO product.
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5K 10 K 20 K 30 K 40 K
1.5 1.0
M (emu/g)
0.5 0.0 -0.5 -1.0 -1.5 -80000 -60000 -40000 -20000
0
20000 40000 60000 80000
H (Oe)
Figure S7 Magnetic hysteresis loops of the pteridophyte-like Cu@Cu2O product measured at different temperatures.
Table S1 Fitted parameters according to equation (2) for pteridophyte-like Cu@Cu2O and golfball-like Cu@ZnO products. Samples
MS(0) (emu/g)
C (emu/g)
E1 (meV)
R2
1.507±0.245
1.601±0.225
1.011±0.351
0.924
0.096±0.003
0.065±0.003
1.502±0.363
0.989
Pteridophyte-like Cu@Cu2O Golfball-like Cu@ZnO
5
