Application of LiTaO3 pyroelectric crystal for pulsed neutron detection

Lü, Yi; Wu, Jian; Gao, Hui; Li, M.

doi:10.1016/j.nima.2016.04.113

Cited by 8 publications

(3 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared with metal oxide ceramic PZT [6][7][8][9] and BST [10], single-crystal material lithium tantalate generally has better pyroelectric properties. For example, lithium tantalate has the characteristics of a large pyroelectric coefficient, high Curie temperature, high detectivity, and small dielectric constant [11][12][13]. It is an ideal material for preparing pyroelectric sensors, so it has been widely used in pyroelectric detectors.…”

Section: Introductionmentioning

confidence: 99%

Carbon Dioxide Sensor Module Based on NDIR Technology

Zhou

Zhang

et al. 2021

Micromachines

View full text Add to dashboard Cite

In this paper, a gas detection system with an environmental compensation algorithm based on nondispersive infrared (NDIR) technology was designed. The prepared infrared pyroelectric detector was a dual-channel type based on the lithium tantalate (LiTaO3) wafer. The design of the optical gas chamber adopted a combination of two ellipsoids and a spherical top surface, which not only enhanced the coupling efficiency of the light propagation but also facilitated the miniaturization of the sensor module. In addition to this, a temperature and humidity compensation algorithm based on the least square method was proposed to make the measurement accuracy up to ±0.9% full scale (FS).

show abstract

Section: Introductionmentioning

confidence: 99%

Carbon Dioxide Sensor Module Based on NDIR Technology

Zhou

Zhang

et al. 2021

Micromachines

View full text Add to dashboard Cite

show abstract

“…Lithium tantalite (LiTaO 3 ), an excellent single crystal, has high planar electromechanical coupling, a mechanical quality factor, and low acoustic transmission loss and is used in various applications because of its low dielectric constant [1][2][3][4]. Many previous studies have focused on single crystal LiTaO 3 [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Sinterability and Dielectric Properties of LiTaO3-Based Ceramics with Addition of CoO

Zhang

Yao

2020

Materials

View full text Add to dashboard Cite

Lithium tantalite (LiTaO3) is a common piezoelectric and ferroelectric crystal, but the LiTaO3 polycrystalline ceramics have rarely been reported, and their refractory character presents difficulties in their fabrication. In this study, LiTaO3-based ceramics with different amounts of CoO were prepared by pressureless sintering at 1250 °C, and the effects of the amount of sintering aid on the sinterability, microstructure, and dielectric properties of the ceramics were investigated. The relative densities of the LiTaO3-based ceramics were significantly improved by the addition of CoO powder. The LiTaO3-based ceramics achieved the highest relative density (89.4%) and obtained a well-grained microstructure when the added amount of CoO was 5 wt.%. Only the LiTaO3 phase in the ceramics was observed, indicating that the ions Co diffused into the LiTaO3 lattices and mainly existed in two forms: Co2+ and Co3+. The effects of the added amount of CoO on the dielectric properties of the LiTaO3-based ceramics were studied thoroughly. Consequently, the dielectric constant was enhanced, and the dielectric loss decreased in the LiTaO3-based ceramics with the addition of CoO. The optimal value was obtained at 5 wt.% of CoO-added LiTaO3-based ceramics.

show abstract

“…LiTaO 3 , a typical monocrystalline ferroelectric material, is widely used in the optical technology industry. [1][2][3] The processed LiTaO 3 wafer is usually used for manufacture of communication devices such as filters, resonators and transducers. 4,5 In order to achieve high-performance, the LiTaO 3 wafer requires a damage free surface lattice with high flatness, since low surface quality will affect the frequency accuracy and stability.…”

mentioning

confidence: 99%

Effect of Alkali Metal Ion on Chemical Mechanical Polishing of LiTaO₃

Li¹,

Zhang²,

Li³

et al. 2022

ECS J. Solid State Sci. Technol.

View full text Add to dashboard Cite

Low material removal rate (MRR) and poor surface quality are the two main problems in ultra-precision machining of LiTaO3 wafer. In order to improve the MRR of LiTaO3 in chemical mechanical polishing (CMP), the effect of alkaline metal ion in slurry on the MRR of LiTaO3 was studied. The results show that adding an appropriate concentration of alkali metal ions to the slurry can increase the abrasive particle size and reduce the electrostatic repulsion between the abrasive and the wafer surface so as to enhance the mechanical effect. At mean time, Li+ replaced by K+ on the LiTaO3 wafer to produce easily removed KTaO3. Adding a certain amount of alkaline metal ion to the slurry improves the MRR of LiTaO3 wafer. Finally, when CMP was performed in slurry (pH 9) with a composition of 10 wt% SiO2 and 0.07 M KCl, the MRR of LiTaO3 is 111 nm/min and the surface roughness (Sq) is 0.3 nm.

show abstract

Application of LiTaO3 pyroelectric crystal for pulsed neutron detection

Cited by 8 publications

References 12 publications

Carbon Dioxide Sensor Module Based on NDIR Technology

Carbon Dioxide Sensor Module Based on NDIR Technology

Sinterability and Dielectric Properties of LiTaO3-Based Ceramics with Addition of CoO

Effect of Alkali Metal Ion on Chemical Mechanical Polishing of LiTaO₃

Contact Info

Product

Resources

About

Application of LiTaO3 pyroelectric crystal for pulsed neutron detection

Cited by 8 publications

References 12 publications

Carbon Dioxide Sensor Module Based on NDIR Technology

Carbon Dioxide Sensor Module Based on NDIR Technology

Sinterability and Dielectric Properties of LiTaO3-Based Ceramics with Addition of CoO

Effect of Alkali Metal Ion on Chemical Mechanical Polishing of LiTaO3

Contact Info

Product

Resources

About

Effect of Alkali Metal Ion on Chemical Mechanical Polishing of LiTaO₃