Title :
3DAP analysis of FeCo electrodeposited soft magnetic films with high Bs
Author :
Takahashi, Y.K. ; Hono, K. ; Miyake, Y. ; Kaneko, D. ; Kanai, H.
Author_Institution :
Nat. Inst. for Mater. Sci., Tsukuba, Japan
Abstract :
In this paper soft magnetic FeCo films were electrodeposited in two different electroplating baths with pulse current, one contained NaCl, the other contained KCl as electroconductivity investor. This however, have slightly lower Bs than that of the sputtered film. One of the reasons for the lower Bs is thought to be the effect of impurities. In order to clarify the effect of impurities of Bs we have investigated the microstructures and the local chemistries of the FeCo films. Magnetic properties were measured by a VSM and a SQUID magnetometer and the microstructures were characterized by a transmission electron microscopy (TEM) and a three-dimensional atom probe (3DAP). Results show that low Bs is attributed to the low magnetization in the grain boundaries.
Keywords :
SQUID magnetometers; atom probe field ion microscopy; cobalt alloys; electrodeposition; grain boundaries; impurities; iron alloys; magnetic flux; magnetic thin films; magnetisation; nickel alloys; potassium compounds; sodium compounds; soft magnetic materials; sputtering; titanium; transmission electron microscopy; FeCo; KCl; NaCl; SQUID magnetometer; Si; TEM; VSM; electroconductivity investor; electrodeposition; electroplating baths; grain boundaries; magnetic properties; magnetization; microstructures; pulse current; soft magnetic FeCo films; three dimensional atom probe analysis; Atomic measurements; Chemistry; Impurities; Kirchhoff´s Law; Magnetic analysis; Magnetic films; Magnetic properties; Microstructure; SQUID magnetometers; Soft magnetic materials;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1463711
