PMN-PT& PMNT Crystal
Keywords:
Scintillation Crystals
- Product Introduction
- Key advantages
- Application areas
- Product Features
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- Commodity name: PMN-PT& PMNT Crystal
PMNT/PMN-PT (Lead Magnesium Niobate-titanate or Lead Magnesium Niobate-lead Titanate) is a very important relaxor ferroelectric material, particularly crucial in electrical and acoustic applications.
Product Introduction
PMNT/PMN-PT (Lead Magnesium Niobate-titanate or Lead Magnesium Niobate-lead Titanate) is a very important relaxor ferroelectric material, particularly crucial in electrical and acoustic applications. PMNT/PMN-PT is a relaxor ferroelectric solid-solution single crystal—a cutting-edge piezoelectric material renowned for its exceptionally high piezoelectric coefficients, remarkable electromechanical coupling factors, superior dielectric properties, and remarkably low energy losses. In particular, its piezoelectric performance outperforms conventional piezoelectric materials by nearly 10 times, enabling broader applications across fields such as sonar technology, multilayer actuators, ultrasonic imaging, and optics—applications where traditional PZT piezoceramics have historically fallen short.
PMNT exhibits excellent piezoelectric, nonlinear optical, and pyroelectric properties, making it ideal for applications in next-generation high-performance piezoelectric transducers, nonlinear optical devices, and optoelectronic detectors—as well as serving as a foundation for new materials.
Key advantages
- High-voltage electrical performance
- Large electromechanical coupling coefficient
- High dielectric constant, low loss
- Excellent nonlinear optical properties
- Excellent pyroelectric properties
- High sensitivity, high bandwidthApplication Areas
- Ultrasonic transducers, sensors, piezoelectric motors
- Nonlinear optical devices, optoelectronic detection devices
- Medical ultrasound
- Non-destructive testing (NDT)
- Submarine sonar, ocean mappingProduct Features
Material Properties
Crystal Structure
Tetragonal, (close to cubic)
Lattice Constant
a=4.024Å (R3m)
Density
8.1 g/cm³
Mohs Hardness
3.5 Mohs
Electromechanical Coupling Coefficient
K33 (Longitudinal Mode): > 92%; Kt (Transverse Mode): 59~62%; K33 (Beam Mode): 84~88%
Curie Temperature
135~150 °C
Thermal Expansion Coefficient
10.4×10⁻⁶ / K°C
Piezoelectric Constant d₃₃
1200~1500; 1500~2000; 2000~2500 pC/N
Dielectric Constant (polarization) ε
4000~5500@1 kHz
Coercive Electric Field
2~2.5 kV/cm
Melting Point
1280°C
Product Processing Indicators
Effective Aperture
>90%
Dimensional Tolerance
(W±0.1 mm)×(H±0.1 mm)×(L±0.2 mm)
Chamfer
≤0.2×45°
Surface Quality
20-10 S-D
Flatness
≤λ/10@632.8 nm
Parallelism
<30"
Perpendicularity
≤15′
Chipped Edge
<0.1 mm
Coating
Customized to Customer Specifications
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- Strong electro-optic effect: Ideal for high-speed optical modulation.
- High dielectric constant: Beneficial for surface acoustic wave and ultrasonic sensor applications.
- Excellent thermal stability: Suitable for high-temperature environments.
- Wide optical transparency range: Exhibits excellent light transmission across wavelengths from ultraviolet to mid-infrared.
- High sensitivity
- Wide range of transparency
- Not easily deliquescent -
- Optical communication: Used in electro-optic modulators and optical switches.
- Precision sensing: Applied in accelerometers, temperature sensors, and more.
- Laser technology: Used in laser frequency doublers, modulators, and more.
- Medical devices: Piezoelectric sensors used in ultrasound equipment.
- Surface acoustic wave devices: such as wireless filters and delay lines.
- Optical storage, transient recording
- High-speed holographic camera -
Material Properties Lattice constant a = 5.154 Å, c = 13.783 Å Density 7.45g/cm3 Color Colorless Mohs Hardness 5.5–6 on the Mohs scale Through the range 400–5000 nm Resistivity 1015wm
Dielectric constant es11/e0:39~43 es33/e0:42~43 et11/e0:51~54 et33/e0:43~46 Coefficient of thermal expansion aa = 1.61 × 10⁻⁶/K, ac = 4.1 × 10⁻⁶/K Refractive index no = 2.176, ne = 2.180 (@633 nm) Electro-optic coefficient r33 = 30.4 pm/V Heat Capacity (Cp) 100 J/k.mol Curie Temperature 610°C Melting point 1650°C Product Processing Metrics Effective Aperture >90% Dimensions Customized to customer specifications Diameter Tolerance +0 / -0.05 mm Dimensional Tolerance ±0.05 mm Protective Chamfer ≤0.2 × 45° Surface finish 10-5 S-D Flatness ≤λ/6 @ 632.8 nm Parallelism <20" Verticality ≤15′ Chipped edge < 0.1 mm Coating Customized to customer specifications
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