Product

PZT-based piezoelectric ceramic

TFT distributes PZT-based piezoelectric ceramic products that are produced by Tayca Corporation, which is our parent company.
We conduct an integrated production approach from raw material powder to the piezoelectric ceramic elements.
We have a wide variety of ceramics with dielectric constants and coercive electric fields.
Various electrode options are available.
Please feel free to contact us with your inquiries and we propose materials that best suit to your request.

Full property sheet for PZT based piezoelectric ceramic

Item	Symbol	Material Unit	L-125	L-145N	L-155N	L-155NF	L-304	L-11	L-201F	L-901	L-13	H-8
Relative permittivity	ε 33T /ε 0		8000	6600	5700	5400	5250	4000	3400	3000	1900	1350
Coercive electric field	Ec	V/mm	320	420	470	450	570	670	720	820	870	約2000
Curie Temperature	Tc	℃	125	145	155	154	170	210	230	250	300	320
Dielectric Loss Factor	tanδ	%	3.8	2.4	2.2	2.6	2.3	1.8	2.1	1.5	2	0.3
Coupling Coefficient	kp	%	68	71	71	71	69	70	70	70	71	61
	k31	%	41	43	42	44	41	43	44	43	42	35
	k33	%	73	75	77	79	77	75	79	78	77	72
	kt	%	51	52	51	52	51	51	53	52	51	49
Frequency Constant	Np	Hz･m	1970	1910	1870	1900	1987	1930	1945	1957	1980	2200
	N31	Hz･m	1410	1430	1430	1430	1426	1420	1440	1415	1480	1620
	N33	Hz･m	1320	1310	1350	1270	1342	1320	1290	1333	1350	1490
	Nt	Hz･m	2070	2050	2070	2020	2097	2060	2080	2094	2080	2020
Piezoelectric Constant	d31	x10-12m/V	-440	-410	-370	-375	-355	-325	-300	-283	-207	-133
	d33	x10-12m/V	880	820	760	801	745	645	640	573	440	312
	g31	x10-3m/N	-6.4	-7.1	-7.4	-7.9	-7.6	-9.2	-10.0	-10.8	-12.3	-11.1
	g33	x10-3m/N	12.8	14.0	15.1	16.8	16.1	18.2	21.3	21.9	26.2	26.1
Elastic Constant	s11E	x10-12m2/N	16.2	15.7	15.5	15.5	16.1	16.1	15.5	16.3	14.5	12.0
	s33E	x10-12m2/N	20.5	20.7	19.6	22.1	20.3	20.8	21.8	20.7	19.4	15.7
	c11E	x1010N/m2	13.6	13.2	13.6	14.2	14.0	13.3	15.3	13.9	15.2	14.4
	c33E	x1010N/m2	12.7	12.4	12.9	12.4	12.8	12.4	12.8	12.7	13.0	12.3
Poisson's Ratio	σ		0.28	0.24	0.27	0.24	0.30	0.26	0.30	0.30	0.30	0.30
Mechanical Quality Factor	Qm		40	50	50	35	45	50	60	56	50	2500
Density	ρ	x103kg/m3	7.8	7.8	7.9	7.9	7.6	7.7	7.8	7.6	7.9	7.9
Average Grain Size	Ｄ	μm	5	4	4	2-3	2-3	5	2	2	1-2	2-3
Type			Soft material									Hard material

Manufacturer:Tayca Corporation Country of origin:Japan

Piezoelectric material: Description of items .

Relative permittivity（ε 33T /ε 0 ）	Indicates the ratio with the electric permittivity of a vacuum and the ability of the insulator to store electric energy in an electrical field.
Coupling Coefficient（k）	Efficiency at which electrical energy is converted into mechanical (kinetic) energy
Piezoelectric Constant（d）	Indicates the magnitude of the strain (displacement) when voltage is applied
Piezoelectric Constant（g）	Indicates the output voltage for the force that is applied
Elastic Constant（s）	Magnitude of the strain for the force that is applied
Frequency Constant（N）	Product of the length and its primary resonance frequency in the corresponding direction
Curie Temperature（Tc）	Critical temperature at which the crystal system changes and loses polarization
Dielectric Loss Factor（tanδ）	Electric energy is consumed as thermal energy by the phase angle that occurs when an AC voltage is applied to a dielectric. Dielectric Loss Factor indicates the size that is consumed as thermal energy.
Mechanical Quality Factor（Qm）	Indicates the sharpness of the mechanical vibration at resonance frequency

Piezoelectric ceramic electrode options

Standard Electrode
Wrap-around Electrode

Standard Electrode,Wrap-around Electrode

Electrode Material

Electrode Ni/Au plating, Ni 0.5 μm, Au 0.5 μm (standard thickness)
Cr/Au sputtering, Cr 0.05, Au 0.2 μm (standard thickness)
Fired silver