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PFM_S
PFM_S

PFM_S

PFM_S €300 +
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Product Description


Test Pattern for the Piezoresponse Force Microscopy PFM_S (piezoelectric single crystal lead PMN-PT)


The sample is intended for:

 

·         Setting the piezoresponse force microscopy (PFM)

·         Selection of the optimal parameters (phase and amplitude) in the PFM mode 

·         Test measurements holding in the PFM mode

 

Main characteristics:

 

 Material
  piezoelectric single crystal lead PMN-PT
 Crystal orientation
  <001>
 Grid type
  R3m, Rhombohedral
 Piezo module, d33
  1800-2400, pC/N
 Phase transition temperature
  145 +/- 3° C
 Sample size
  5х5х0.5 мм


Quick Start Guide

In order for making measurements the sample is fixed on the SPM holder and the bottom electrode of the sample has to be grounded.

The measurements are hold in contact mode. To SPM tip AC voltage is applied with a frequency fmod. The surface of the sample begins to oscillate with the same frequency fmod. This response is analyzed using the lock-in amplifier. In the signal of piezoresponse amplitude the domain walls contrast is observed, and in the signal phase – contrast of the domains.


Topography image in Contact mode



3d_topo.jpg

Scan size 10х10 um, 256х256 points




Surface profile

 profile.jpg



Example of measurement results in PFM mode:


Amplitude and phase of piezoresponse  (vertical deflection)

VPFM.jpg

 The same scan area after polarization by voltage -10 and +10 V in PFM mode

VPFM-litho.jpg

Scan size: 10х10 um. Conductive force modulation tip FMG01/Pt.
AC voltage amplitude 0.3 V, fmod = 470 kHz (contact resonance frequency).



PFM spectroscopy results demonstrating hysteresis loops for point 1:

p1.jpg 


 Mag.jpg  Phase.jpg

                                       А)      signal amplitude                                                   Б) signal phase

 


 

 

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