JEOL JSPM-5200 Instructions Manual page 302

SPS P arameters
Specify various kinds of parameters using the SPS Parameters window. The SPS
Parameter window is divided into several tab windows for various kinds of SPS
measurements. Set the
when you perform measurements by setting Acquisition of the SPM Parameters window
to S ingle SPS or SPS Mapping, specify the kind of SPS measureme
Parameters window.
The SPS modes are as shown below. However, it depends on the SPM measurement
mode whether you can actually perform measurements under the SPS mode.
• IV
You can perform IV measurement in the STM, contact AFM, AC or AFM, mode.
Usually, perform it in the STM and contact AFM modes. You must use the conduc-
tive cantilever when you perform IV measurement in the AFM mode.
During IV measurement, the feedback control is withheld and measur ment is
carried out keeping the distance between tip and specimen at a constant. At the
Repeat measurement, feedback is sampled between measurements and performs
feedback under the conditions specified on the SPS Parameter window.
The position at which IV measurement is carried out is determined by using the
Position function in the Tip window.
• Clock/ms
Specify the clock speed when performing measurements. This Clock/ms item is
independent from that of the SPM Parameters window
measurement.
• Low Voltage/V
Specify the minimum bias voltage for sweeping in this input box.
• High Voltage/V
Specify the maximum bias voltage for sweeping in this input box.
TMPM5200-2
SPS measurement parameters from each tab window. Moreover,
If the Number of Points is 128, only Fast (100 μs) and
selectable. If the Number of Points is 256 or more, the same number for clock
speed as in the SPM Parameters window is selectable in this window.
５ MEASUREMENT OPERATION
nts using the SPS
e
. It is used only for SPS
Slow (1.6 ms) are
5-239