problem with piezoelectric impedance two method

Hello,

I use two method to calculate piezoelectric impedance.
method 1:
I use (pzd.Y11) to calculate impedance of piezoelectric.

method 2:
I use Electrical Circuit (cir) coupled with Piezoelectric Devices (pzd). I connect voltage source to a resistor and resistor to piezoelectric in frequency domain. I read Electrical Potential (V) piezoelectric and current of Current Through Device resistor (cir.R1_i) in frequency domain. the impedance would be Z=V/I.

but the results of two methods are different.
please attached file.

Would you please help me for this difference?

Regards