Bulk crystal growth and thermal, spectroscopic and laser properties of disordered Melilite Nd:Ca2Ga2SiO7 single crystal

Shen, Chuanying; Wang, Duanliang; Xu, Honghao; Pan, Zhongben; Zhang, Huaijin; Wang, Jing; Boughton, Robert I.

doi:10.1016/j.jallcom.2017.07.217

Cited by 22 publications

(9 citation statements)

References 31 publications

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“…Methoxyanilinium perrhenate 18-Crown-6 [25] 153 Ferroelectric Ps=1.2 μC/cm 2 4-methoxyanilinium tetrafluoroborate-18-crown-6 [24] 127 Ferroelectric Ps=0.54 μC/cm 2 -----except phase transition, no characteristic was observed or reported.…”

Section: Dielectric Propertiesmentioning

confidence: 99%

“…It should be pointed out that although some possible factors, such as the boiling point of reactants, strength of electron absorption/ pushing effect of different substituents of organic amine, molecular weight and so on were compared, it is still difficult to estimate the thermal stability (phase transition temperature) or characteristic of crown-ether-organic compounds, due to there are so many numerous derivatives of organic amine (aniline, cyclamine and chain amine; and for same aniline and cyclamine, different quantities, kinds and positions of substituents). For example, the ferroelectric property was observed in 4-methoxyanilinium perrhenate 18-crown-6 [25] but was not detected in 4-ethoxyanilinium perchlorate 18-crown-6present [3 2] , although the difference (methoxyl or ethyoxyl) of the two amine derivatives is very small. [27] T1=305 T2=120 Ferroelectric Ps=0.3μC/cm2…”

Section: Thermal Measurementsmentioning

confidence: 99%

“…Superior nonlinear optical switchingcontrast (~12); High laser-induced damage threshold (∼8.9 GW/cm 2 ) [(3-nitroanilinium + )(18-crown-6)][IO 4 ](CH 3 OH) [30] 220 -----4-ethoxyanilinium perchlorate 18-crown-6 [32] 163 -----Methoxyanilinium perrhenate 18-Crown-6 [25] 153 Ferroelectric P s = 1.2 µC/cm 2 4-methoxyanilinium tetrafluoroborate-18-crown-6 [24] 127 Ferroelectric P s = 0.54 µC/cm 2 -----except phase transition, no characteristic was observed or reported.…”

Section: Thermal Measurementsmentioning

confidence: 99%

“…For example, 4-methoxyanilinium tetrafluoroborate-18-crown-6 shows a second-order ferroelectric phase transition at 127 K, together with an abrupt dielectric anomaly, Debye-type relaxation behaviour [24]. Methoxyanilinium perrhenate 18-Crown-6 undergoes disorder-order structural phase transition at about 153 K, with ferroelectric spontaneous polarization was determined to be 1.2 µC/cm 2 [25]. (2,6-diisopropylanilinium)( [18]crown-6)](ClO 4 ) underwent a sequence of phase transitions (Ibam-Pbcn-Pna21) at T 1 = 278 K and T 2 = 132 K, with a saturation polarization of 0.35 µC/cm 2 obtained at 108 K [26].…”

Section: Introductionmentioning

confidence: 97%

“…A large number of crown type molecular materials have been synthesized in the recent decades [23][24][25][26][27][28][29][30][31][32][33][34]. For example, 4-methoxyanilinium tetrafluoroborate-18-crown-6 shows a second-order ferroelectric phase transition at 127 K, together with an abrupt dielectric anomaly, Debye-type relaxation behaviour [24].…”

Section: Introductionmentioning

confidence: 99%

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Growth and Property Investigations of Two Organic–Inorganic Hybrid Molecular Crystals with High Thermal Stability: 4-Iodoanilinium perchlorate 18-crown-6 and 4-Iodoanilinium Borofluorate 18-crown-6

et al. 2019

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Two new organic–inorganic hybrid molecular single crystals, 4-Iodoanilinium perchlorate 18-crown-6 (1) and 4-Iodoanilinium borofluorate 18-crown-6 (2), with large sizes and high thermal stability were successfully synthesized by solution method. Their structures, phase purities, thermal stability, dielectric, absorption and fluorescence spectra were systematically investigated for potential applications. Compounds 1 and 2 crystallize in orthorhombic crystal system, in same space group, namely Pnma. The thermal measurements shown 1 and 2 maintain high thermal stability up to 150 °C. The temperature dependency of dielectric constant was studied, and no distinct anomaly was observed. The band gap were calculated to be 3.38 eV and 3.57 eV for 1 and 2, respectively, slightly smaller than those of layer perovskite (benzylammonium)2PbCl4 semiconducting materials, which have potential applications in optoelectronic detection field. The investigations throw light on the semiconductor properties of organic–inorganic hybrid crown type material and provide two types of crown compounds with high thermal stability.

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Section: Dielectric Propertiesmentioning

confidence: 99%

Section: Thermal Measurementsmentioning

confidence: 99%

Section: Thermal Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Growth and Property Investigations of Two Organic–Inorganic Hybrid Molecular Crystals with High Thermal Stability: 4-Iodoanilinium perchlorate 18-crown-6 and 4-Iodoanilinium Borofluorate 18-crown-6

et al. 2019

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Nonlinear Optical Effects in Europium Melilite Eu₂MgSi₂O₇

Tsysar,

Bazhanov,

Abgaryan

et al. 2024

Physica Status Solidi (b)

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Crystals of the family of tetragonal, non‐centrosymmetric melilites have attracted interest as nonlinear optical, piezoelectric, and ferroelectric materials. This work presents an ab initio study of the optical properties of europium melilite, Eu2MgSi2O7. The study includes the calculation of refractive and absorption spectra, with respect to the density of states of the system. The obtained results demonstrate the correlation between the electronic structure of europium melilite and its optical characteristics.

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Determining the Thermal Conductivity of Gehlenite by Thermal Microscopy at Room Temperature

et al. 2023

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The thermal conductivity of a single-phase gehlenite (2CaO Al2O3 SiO2) sample was determined using thermal microscopy. The composition of the primary crystal region of the gehlenite sample was CaO: SiO2:Al2O3 = 38:28:34 (mass%), which was maintained after melting and cooling. After polishing the samples, the size of the gehlenite crystal was sufficiently large to be measured using a thermal microscope. The value of $$\sqrt{\lambda C\rho }$$ λ C ρ , where λ is thermal conductivity C is specific heat andρis density, of the samples was measured every 10 μm to obtain its distribution. When comparing the results with the optical microscopy image of the sample, the gehlenite region showed a larger value of $$\sqrt{\lambda C\rho }$$ λ C ρ than the glassy region. Specifically, the value of $$\sqrt{\lambda C\rho }$$ λ C ρ of the gehlenite region was determined to be 2.2 ± 0.1 kJs−0.5·m−2·K−1, which resulted in a thermal conductivity of 2.1 ± 0.2 Wm−1·K−1. Moreover, the oxide gehlenite phase showed lower thermal conductivity than the other constituent phases, i.e., CaO, Al2O3, and SiO2.

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Bulk crystal growth and thermal, spectroscopic and laser properties of disordered Melilite Nd:Ca2Ga2SiO7 single crystal

Cited by 22 publications

References 31 publications

Growth and Property Investigations of Two Organic–Inorganic Hybrid Molecular Crystals with High Thermal Stability: 4-Iodoanilinium perchlorate 18-crown-6 and 4-Iodoanilinium Borofluorate 18-crown-6

Growth and Property Investigations of Two Organic–Inorganic Hybrid Molecular Crystals with High Thermal Stability: 4-Iodoanilinium perchlorate 18-crown-6 and 4-Iodoanilinium Borofluorate 18-crown-6

Nonlinear Optical Effects in Europium Melilite Eu₂MgSi₂O₇

Determining the Thermal Conductivity of Gehlenite by Thermal Microscopy at Room Temperature

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Bulk crystal growth and thermal, spectroscopic and laser properties of disordered Melilite Nd:Ca2Ga2SiO7 single crystal

Cited by 22 publications

References 31 publications

Growth and Property Investigations of Two Organic–Inorganic Hybrid Molecular Crystals with High Thermal Stability: 4-Iodoanilinium perchlorate 18-crown-6 and 4-Iodoanilinium Borofluorate 18-crown-6

Growth and Property Investigations of Two Organic–Inorganic Hybrid Molecular Crystals with High Thermal Stability: 4-Iodoanilinium perchlorate 18-crown-6 and 4-Iodoanilinium Borofluorate 18-crown-6

Nonlinear Optical Effects in Europium Melilite Eu2MgSi2O7

Determining the Thermal Conductivity of Gehlenite by Thermal Microscopy at Room Temperature

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Nonlinear Optical Effects in Europium Melilite Eu₂MgSi₂O₇