Magnetic hysteresis loops of NFO ferrite on PZT are
presented in Fig. 3a. Well-defined magnetic hysteresisloops were observed when external magnetic field is applied
parallel and perpendicular to the film, showing an in-plane
coercivity of 190 Oe and an out-of-plane coercivity of
260 Oe, respectively. The saturation magnetization of the
NFO film is determined to be 245 emu/cm3.
The magnetostriction behavior of the NFO ferrite film on
PZT substrate was measured by a customer-made magnetostriction
tester, as shown in Fig. 3b. The magnetostriction
constant increases with the applied in-plane magnetic field,
reaching −10 ppm at 250 Oe, which is smaller than the saturation
magnetostriction constant of the pure NFO phase. This
may be due to the limited magnetic field strength of our
magnetostriction test system, which can supply the highest
magnetic field of 250 Oe. The NFO film is clearly not saturated
at 250 Oe according to the hysteresis loops in Fig.
Magnetic hysteresis loops of NFO ferrite on PZT are
presented in Fig. 3a. Well-defined magnetic hysteresisloops were observed when external magnetic field is applied
parallel and perpendicular to the film, showing an in-plane
coercivity of 190 Oe and an out-of-plane coercivity of
260 Oe, respectively. The saturation magnetization of the
NFO film is determined to be 245 emu/cm3.
The magnetostriction behavior of the NFO ferrite film on
PZT substrate was measured by a customer-made magnetostriction
tester, as shown in Fig. 3b. The magnetostriction
constant increases with the applied in-plane magnetic field,
reaching −10 ppm at 250 Oe, which is smaller than the saturation
magnetostriction constant of the pure NFO phase. This
may be due to the limited magnetic field strength of our
magnetostriction test system, which can supply the highest
magnetic field of 250 Oe. The NFO film is clearly not saturated
at 250 Oe according to the hysteresis loops in Fig.
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