High temperature ferromagnetism with a giant magnetic moment in transparent co-doped SnO(2-delta).
The occurrence of room temperature ferromagnetism is demonstrated in pulsed laser deposited thin films of Sn(1-x)Co(x)O(2-delta) (x<0.3). Interestingly, films of Sn(0.95)Co(0.05)O(2-delta) grown on R-plane sapphire not only exhibit ferromagnetism with a Curie temperature close to 650 K, but also a giant magnetic moment of 7.5+/-0.5 micro(B)/Co, not yet reported in any diluted magnetic semiconductor system. The films are semiconducting and optically highly transparent.
Ogale
S B
SB
Center for Superconductivity Research, Department of Physics, University of Maryland, College Park, MD 20742-4111, USA.
Choudhary
R J
RJ
Buban
J P
JP
Lofland
S E
SE
Shinde
S R
SR
Kale
S N
SN
Kulkarni
V N
VN
Higgins
J
J
Lanci
C
C
Simpson
J R
JR
Browning
N D
ND
Das Sarma
S
S
Drew
H D
HD
Greene
R L
RL
Venkatesan
T
T