Effect of gamma irradiation on the dielectric properties and electrical conductivity of the TlInS2 single crystal

Mustafaeva, S. N.; Asadov, M. M.; Ismailov, A.

doi:10.1134/s1063783409110122

Cited by 22 publications

(12 citation statements)

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“…Gamma ray of this particular dose may be reduced the defects in sodium borate crystal. The increase in permittivity after irradiation with a particular dose of gamma ray due to annealing of defects has been reported in TlInS 2 (Mustafaeva et al, 2009) and TlGaS 2 (Sheleg et al, 2003) single crystals. Madi et al (1999) reported in LiKSO 4 single crystal the reduction of point defects for higher irradiation doses due to recombination of adjacent interstitials and accompanied vacancies.…”

Section: Dielectric Studiesmentioning

confidence: 94%

Effect of gamma ray irradiation on sodium borate single crystals

Kalidasan

Asokan

Baskar

et al. 2015

Radiation Physics and Chemistry

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Section: Dielectric Studiesmentioning

confidence: 94%

Effect of gamma ray irradiation on sodium borate single crystals

Kalidasan

Asokan

Baskar

et al. 2015

Radiation Physics and Chemistry

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“…It was previously found that high defective crystals TlInS 2 with layered structure are characterized by a high concentration of localized states (≃10 18 eV À1 cm À3 ) in the bandgap near the Fermi level, and electron hopping conductivity along localized states is realized in them. [13,16] The exponential regions of the dependences σ(T ) for C-samples at 255-300 K and too exponential regions for 2C-samples at 200-255 K, 255-300 K correspond to conductivity with hopping activation energies of 0.1-0.7 eV. In such systems, upon further cooling, one can expect the appearance of hopping conductivity with a variable hopping length.…”

Section: The Conductivity Parameters Of the Tlins 2 Crystalsmentioning

confidence: 99%

“…electrical conductivity. Since the conductivity of TlInS 2 is very sensitive to changes in the defect's concentration level, [13][14][15] it is important to study the electrical conductivity of TlInS 2 C and 2C polytypes at various doses of X-ray irradiation in the temperature range of 100-300 K. The article presents the results of such research.…”

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confidence: 99%

The Effect of X‐Ray Irradiation on Conductivity of C and 2C Polytype TlInS₂ Ferroelectrics

Borovyi

Gololobov

Isaieva

et al. 2021

Physica Status Solidi (b)

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Introductionβ-TlInS 2 crystals are the wide-gap semiconductor-ferroelectrics and belong to the class of low-dimensional thallium compounds TlMX 2 (M ¼ Ga, In; X ¼ Se, S, Te). At ambient conditions, β-TlInS 2 crystals are characterized by C2/c space symmetry group of the monoclinic crystal system; unit cell parameters are a ¼ 10.90 Å, b ¼ 10.94 Å, c ¼ 15.18 Å, β ¼ 100.21 . [1] Since TlInS 2 crystals are promising materials as detectors of electromagnetic radiation, their dielectric, optical, elastic properties, and electric transport have been actively studied in numerous works. [2][3][4][5] It was found that a number of anomalies of photoconductivity, permittivity, ultrasonic wave propagation velocity, and specific heat of TlInS 2 crystals which are due to the existence of phase transitions (PTs) in them with the formation of both commensurate and incommensurate modulated structures in temperature range of 170-240 K (as also in isostructural analog TlGaSe 2 but in temperature range 100-160 K). [2,6,7] However, despite numerous experimental studies, data on the characteristics and mechanisms of PT "paraelectric-incommensurate phase (IP)" and "IP-commensurate phase (CP)" in TlInS 2 are quite contradictory. For example, according to neutron diffraction data, [8] modulation satellites in corresponding to IP are observed in temperature range of T ¼ 200-216 K with a modulation vector qðδ, δ, 0.25Þ ðδ ¼ 0.012Þ. From another hand, the X-ray diffraction data in temperature range of T ¼ 194-214 K indicate the formation of incommensurate waves with the wave vector qð∓δ, 0, AE 0.25Þ ðδ ¼ 0.04Þ as the waves of static atomic displacements. [1,9] It was suggested that the incommensurate atomic displacements occur in the a-direction of monoclinic unit cell, therefore the wavelength of incommensurability is the irrational number λ a ¼ 1=δ ¼ 22.72 : : : . According to this model, atoms with the same value of Z-coordinate are displaced in the a-b-plane by the same value, and the Z-component of displacement is characterized by λ c ¼ 4c.To explain the discrepancy between neutron and X-ray diffraction data, as well as number of other contradictions, it was suggested to take into account the existence of a number of polytypes in the β-TlInS 2 crystals-C, 2C, 4C, and 8C with the unit cell parameter c ¼ c 0 , 2c 0 , 4c 0 , 8c 0 (c 0 % 15 Å), respectively. [10,11] In particular, for TlInS 2 crystals of 2C polytype, the absence of modulation satellites of IP and CP in temperature range of 170-300 K, which points to the absence of incommensurate and commensurate modulation waves, unlike the C polytype, was demonstrated with four circle X-ray diffractometry method. [9,12] Because of these differences of the C and 2C polytypes crystal lattice dynamics, it is crucial to compare the transport characteristics of these polytypes, in particular, their

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“…In spite of these advantages, PMN-PT is not widely used for NDE of NPP applications because there has been little conformance verification on its radiation and high-temperature resistance. Much research about the effects of various kinds of irradiation on ferro-, pyro-, and piezo-electric elements have been reported [13,14,15]. However, to the best of our knowledge, only a few studies on the effects of radiation on PMN-PT have been conducted [7,16].…”

Section: Introductionmentioning

confidence: 99%

Pb(Mg1/3Nb2/3)-PbTiO3-Based Ultrasonic Transducer for Detecting Infiltrated Water in Pressurized Water Reactor Fuel Rods

Kim

Choi

Kim

et al. 2019

Sensors

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In this study, a high-sensitivity Pb( Mg 1 / 3 Nb 2 / 3 ) O 3 - PbTiO 3 (PMN-PT)-based ultrasonic transducer was developed for detecting defective pressurized water reactor (PWR) fuel rods. To apply the PMN-PT substance to nuclear power plant facilities, given the need to guarantee their robustness against radioactive materials, the effects of neutron irradiation on PMN-PT were investigated. As a result, the major piezo-electric constants of PMN-PT, such as the electrical impedance, dielectric constant, and piezo-electric charge constant, were found to vary within acceptable ranges. This means that the PMN-PT could be used as the piezo-electric material in the ultrasonic transducer for nuclear power plants. The newly developed ultrasonic transducer was simulated using a modified KLM model for the through-transmission method and fabricated under the same conditions as in the simulation. The through-transmitted waveforms of normal and defective PWR fuel rods were obtained and compared with simulated results in the time and frequency domains. The response waveforms of the newly developed ultrasonic transducer for pressurized water reactor (PWR) fuel rods showed good agreement with the simulation outcome and could clearly detect defective specimens with high sensitivity.

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Effect of gamma irradiation on the dielectric properties and electrical conductivity of the TlInS2 single crystal

Cited by 22 publications

References 2 publications

Effect of gamma ray irradiation on sodium borate single crystals

Effect of gamma ray irradiation on sodium borate single crystals

The Effect of X‐Ray Irradiation on Conductivity of C and 2C Polytype TlInS₂ Ferroelectrics

Pb(Mg1/3Nb2/3)-PbTiO3-Based Ultrasonic Transducer for Detecting Infiltrated Water in Pressurized Water Reactor Fuel Rods

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Effect of gamma irradiation on the dielectric properties and electrical conductivity of the TlInS2 single crystal

Cited by 22 publications

References 2 publications

Effect of gamma ray irradiation on sodium borate single crystals

Effect of gamma ray irradiation on sodium borate single crystals

The Effect of X‐Ray Irradiation on Conductivity of C and 2C Polytype TlInS2 Ferroelectrics

Pb(Mg1/3Nb2/3)-PbTiO3-Based Ultrasonic Transducer for Detecting Infiltrated Water in Pressurized Water Reactor Fuel Rods

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The Effect of X‐Ray Irradiation on Conductivity of C and 2C Polytype TlInS₂ Ferroelectrics