TY - JOUR
T1 - Structure and magnetic properties of co-sputtered Co-C thin films
AU - Konno, T. J.
AU - Shoji, K.
AU - Sumiyama, K.
AU - Suzuki, K.
N1 - Funding Information:
The authors gratefully acknowledge the Brazilian funding agencies National Council for Scientific and Technological Development (CNPq) and Coordination for the Improvement of Higher Education Personnel (Capes).
PY - 1999/4
Y1 - 1999/4
N2 - We studied the structure and magnetic properties of co-sputtered Co1-xCx thin films using a transmission electron microscope (TEM) and a SQUID magnetometer. These properties were found to depend critically on deposition temperature, TS, and composition, x. Generally, phase separation into metallic Co and graphite-like carbon phases proceeds with increasing TS and decreasing x. Plan view and cross-sectional TEM images of the films prepared showed that Co grains about 10-20 nm in diameter and 30-50 nm in height are three-dimensionally separated by graphite-like carbon layers 1-2 nm thick. Optimum magnetic properties with saturation magnetization of 380 emu/cc and coercivity of 400 Oe were obtained for a film with x = 0.5 and TS = 350 °C.
AB - We studied the structure and magnetic properties of co-sputtered Co1-xCx thin films using a transmission electron microscope (TEM) and a SQUID magnetometer. These properties were found to depend critically on deposition temperature, TS, and composition, x. Generally, phase separation into metallic Co and graphite-like carbon phases proceeds with increasing TS and decreasing x. Plan view and cross-sectional TEM images of the films prepared showed that Co grains about 10-20 nm in diameter and 30-50 nm in height are three-dimensionally separated by graphite-like carbon layers 1-2 nm thick. Optimum magnetic properties with saturation magnetization of 380 emu/cc and coercivity of 400 Oe were obtained for a film with x = 0.5 and TS = 350 °C.
UR - http://www.scopus.com/inward/record.url?scp=0033515344&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033515344&partnerID=8YFLogxK
U2 - 10.1016/S0304-8853(98)01160-3
DO - 10.1016/S0304-8853(98)01160-3
M3 - Article
AN - SCOPUS:0033515344
VL - 195
SP - 9
EP - 18
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - 1
ER -