Search Results - "Mel’nikova, Svetlana V."

Investigation of thermal properties and structure of complex fluoride K3ZrF7 by Gorev, Mikhail V., Molokeev, Maxim S., Kartashev, Andrey V., Pogoreltsev, Evgeniy I., Mel’nikova, Svetlana V., Laptash, Natalia M., Flerov, Igor N.

“…[Display omitted] •Structural change, heat capacity and thermal expansion of fluoride K3ZrF7 are studied.•Structural distortions are mainly associated with the…”
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Optical and calorimetric studies of K2TaF7 by Mel’nikova, Svetlana V., Bogdanov, Evgeniy V., Molokeev, Maxim S., Laptash, Natalia M., Flerov, Igor N.

“…The phase transition Pnma ↔ P21/c in K2TaF7 is a strong first-order transformation of the “proper” ferroelastic origin. A huge angle of rotation of the optical…”
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The structure and phase transitions in oxyfluoride (ND4)2MoO2F4 by Bogdanov, Evgeniy V., Mel'nikova, Svetlana V., Pogoreltsev, Evgeniy I., Molokeev, Maxim S., Flerov, Igor N.

“…Single crystals of (ND4)2MoO2F4 containing 95% deuterium were produced by repeated recrystallization of (NH4)2MoO2F4 in heavy water. The effect of deuteration…”
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Phase Transitions and Nonlinear Optical Property Modifications in BaGa4Se7 by Isaenko, Lyudmila, Dong, Linfeng, Melnikova, Svetlana V., Molokeev, Maxim S., Korzhneva, Ksenia E., Krinitsin, Pavel G., Kurus, Alexey F., Samoshkin, Dmitry A., Belousov, Roman A., Lin, Zheshuai

“…Phase transitions can change the crystal structure and modify the physical properties of crystals. In this work, we investigate the phase transition behavior…”
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Phase Transitions and Nonlinear Optical Property Modifications in BaGa 4 Se 7 by Isaenko, Lyudmila, Dong, Linfeng, Melnikova, Svetlana V, Molokeev, Maxim S, Korzhneva, Ksenia E, Krinitsin, Pavel G, Kurus, Alexey F, Samoshkin, Dmitry A, Belousov, Roman A, Lin, Zheshuai

“…Phase transitions can change the crystal structure and modify the physical properties of crystals. In this work, we investigate the phase transition behavior…”
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Thermal, structural, optical, dielectric and barocaloric properties at ferroelastic phase transition in trigonal (NH4)2SnF6: A new look at the old compound by Flerov, Igor N., Kartashev, Andrey V., Gorev, Mikhail V., Bogdanov, Evgeniy V., Mel’nikova, Svetlana V., Molokeev, Maxim S., Pogoreltsev, Evgeniy I., Laptash, Natalia M.

“…Comprehensive study of (NH4)2SnF6 revealed nonferroelectric first order transformation P-3m1↔P-1. Large entropy (∼Rln9) and volume (∼1%) change resulted from…”
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Phase transformation in some hexahydrated metal(II) fluorogermanates and fluorotitanates: Optical and differential scanning calorimetry studies by Mel'nikova, Svetlana V., Laptash, Natalia M., Pogoreltsev, Evgeniy I.

“…•Single crystals of hydrated fluorides CoGeF6∙6H2O, FeGeF6∙6H2O, CoTiF6∙6H2O, ZnTiF6∙6H2O were grown.•Twinning, birefringence and heat capacities indicate a…”
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Effect of the size of the central atom on the stability of crystalline phases in solid solutions (NH4)3Ti Sn1-F7 by Bogdanov, Evgeniy V., Pogoreltsev, Evgeniy I., Gorev, Mikhail V., Mel'nikova, Svetlana V., Мolokeev, Maxim S., Laptash, Natalia M., Flerov, Igor N.

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Effect of the size of the central atom on the stability of crystalline phases in solid solutions (NH4)3TixSn1-xF7 by Bogdanov, Evgeniy V., Pogoreltsev, Evgeniy I., Gorev, Mikhail V., Mel'nikova, Svetlana V., Мolokeev, Maxim S., Laptash, Natalia M., Flerov, Igor N.

“…The effect of a change in internal pressure as a result of partial substitution of the central atom on the realization and stability of the initial and…”
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Mixed-valence hydrated iron fluoridotitanate: Synthesis, optics and calorimetry by Mel'nikova, Svetlana V., Laptash, Natalia M., Gorev, Mikhail V., Pogoreltsev, Evgeniy I.

“…Mixed-valence hydrated fluoridotitanate with idealized formula FeTiF6·6H2O is the main product of fluoride processing of natural mineral ilmenite with…”
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Influence of the Molecular Groups Ordering on Structural Phase Transitions in (NH4)2WO2F4 Crystal by Krylov, Alexander S, Goryainov, Sergey V, Laptash, Natalia M, Vtyurin, Alexander N, Melnikova, Svetlana V, Krylova, Svetlana N

“…Phase transitions of the (NH4)2WO2F4 crystal were studied by Raman spectroscopy in the range from 10 to 350 K. The mechanism of two phase transitions at T 1 =…”
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Orthorhombic aluminium oxyfluoride, AlOF by Vasiliev, Alexander D., Melnikova, Svetlana V., Isaenko, Lyudmila I.

“…Crystals of the title compound were extracted from the bulk of grown SrAlF5 crystals as unexpected inclusions that were identified as the long sought after…”
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Influence of the Molecular Groups Ordering on Structural Phase Transitions in (NH 4 ) 2 WO 2 F 4 Crystal by Krylov, Alexander S., Goryainov, Sergey V., Laptash, Natalia M., Vtyurin, Alexander N., Melnikova, Svetlana V., Krylova, Svetlana N.

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Effect of K ↔ Rb Substitution on Structure and Phase Transition in Mixed K x Rb 1− x Pb 2 Br 5 Crystals by Isaenko, Ludmila I., Merkulov, Alexandr A., Melnikova, Svetlana V., Pashkov, Viktor M., Tarasova, Alexandra Yu

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Influence of the Molecular Groups Ordering on Structural Phase Transitions in (NH4)2WO2F4 Crystal by KRYLOV, Alexander S, GORYAINOV, Sergey V, LAPTASH, Natalia M, VTYURIN, Alexander N, MELNIKOVA, Svetlana V, KRYLOVA, Svetlana N

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Effect of K ↔ Rb Substitution on Structure and Phase Transition in Mixed KxRb1―xPb2Br5 Crystals by ISAENKO, Ludmila I, MERKULOV, Alexandr A, MELNIKOVA, Svetlana V, PASHKOV, Viktor M, TARASOVA, Alexandra Yu

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Effect of K ↔ Rb Substitution on Structure and Phase Transition in Mixed K x Rb1−x Pb2Br5 Crystals by Isaenko, Ludmila I, Merkulov, Alexandr A, Melnikova, Svetlana V, Pashkov, Viktor M, Tarasova, Alexandra Yu

“…New crystals of the set K x Rb1−x Pb2Br5 with 0 ≤ x ≤ 1, both pure and Er3+ doped, were grown using the Bridgman technique. The mechanism of structural…”
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