Pub Date : 2023-01-01DOI: 10.21883/ftt.2023.03.54750.534
С. И. Давыдов
The previously proposed model of dengling bonds of an organic macromolecule (MM) adsorbed on an ideal single-layer graphene (SLG) is generalized to the presence of structural defects in SLG: inclusions of two-layer or amorphous graphene. Analytical estimates of the charge transition between MM and the substrate and the adhesion energy are obtained.
{"title":"Органическая макромолекула на графене со структурными дефектами: оценки перехода заряда и энергии адгезии","authors":"С. И. Давыдов","doi":"10.21883/ftt.2023.03.54750.534","DOIUrl":"https://doi.org/10.21883/ftt.2023.03.54750.534","url":null,"abstract":"The previously proposed model of dengling bonds of an organic macromolecule (MM) adsorbed on an ideal single-layer graphene (SLG) is generalized to the presence of structural defects in SLG: inclusions of two-layer or amorphous graphene. Analytical estimates of the charge transition between MM and the substrate and the adhesion energy are obtained.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81737287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/ftt.2023.06.55665.57
Е. М. Мошкина, Максим С. Молокеев, Е. В. Еремин, Л. Н. Безматерных
To study the dependence of the properties of ternary oxides (Mn,Fe,Ga)2O3 with the bixbyite structure on the composition, the temperature dependences of the magnetization and ac magnetic susceptibility of two single-crystal samples of different compositions obtained using the flux method were analyzed. A detailed study of the structure was carried out using single-crystal X-ray diffraction analysis, and the changes in structural parameters depending on the composition were analyzed. The dc magnetization and ac magnetic susceptibility of Fe1.1Mn0.76Ga0.14O3 and Fe0.65Mn1.1Ga0.26O3 bixbyites have been studied. Despite the qualitatively similar behavior of the magnetic properties, significant differences were also found, despite a small difference in the Mn/Fe/Ga ratio in the samples under study. It is shown that both compounds experience two successive low-temperature magnetic phase transitions from the paramagnetic phase at T = 20–32 K as the temperature is lowered. Calculations of the Mydosh parameter for the detected phase transitions showed different degrees of ordering in the compounds under study.
{"title":"Влияние Ga-замещения на структурные и магнитные свойства биксбиита (Mn,Fe)-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=-","authors":"Е. М. Мошкина, Максим С. Молокеев, Е. В. Еремин, Л. Н. Безматерных","doi":"10.21883/ftt.2023.06.55665.57","DOIUrl":"https://doi.org/10.21883/ftt.2023.06.55665.57","url":null,"abstract":"To study the dependence of the properties of ternary oxides (Mn,Fe,Ga)2O3 with the bixbyite structure on the composition, the temperature dependences of the magnetization and ac magnetic susceptibility of two single-crystal samples of different compositions obtained using the flux method were analyzed. A detailed study of the structure was carried out using single-crystal X-ray diffraction analysis, and the changes in structural parameters depending on the composition were analyzed. The dc magnetization and ac magnetic susceptibility of Fe1.1Mn0.76Ga0.14O3 and Fe0.65Mn1.1Ga0.26O3 bixbyites have been studied. Despite the qualitatively similar behavior of the magnetic properties, significant differences were also found, despite a small difference in the Mn/Fe/Ga ratio in the samples under study. It is shown that both compounds experience two successive low-temperature magnetic phase transitions from the paramagnetic phase at T = 20–32 K as the temperature is lowered. Calculations of the Mydosh parameter for the detected phase transitions showed different degrees of ordering in the compounds under study.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82040090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/ftt.2023.02.54290.508
В. В. Баковец, А. В. Сотников
The lattice disorder of different architecture and dimensions influence on the thermoelectric properties (Seebeck coefficient S, resistivity , total thermal conductivity κtot, power factor S2/, figure of merit ZT) of the polycrystalline ternary sulfides MTS3 was studied. The high-temperature misfit layered compounds (MS)zNbS2 (MS is GdxDy1-xS solid solutions) were chosen as objects of the study. The variation of gadolinium concentration along the series x = 0.0, 0.1, 0.2, 0.5, 1.0 allowed one to alter the short-range and the long-range order of the crystal lattice and to study their effect on thermoelectric parameters of (GdxDy1-xS)zNbS2. At low concentration of x = 0.1 the crystallite size increases, cause the deformation stresses decrease and, thereby, leads to an abnormal changes of S, , κtot values and ZT decrease. An increase of the gadolinium concentration (x = 0.2–0.5) alters the electronic structure and the interatomic bonding character of the incommensurate subsystems (GdxDy1-xS) and NbS2. In this case, S and values remains practically unaffected, while the thermal conductivity value decreases by 40% and ZT increases by 2 times. The nature of this phenomenon and the anisotropy of the thermoelectric properties were discussed.
{"title":"Проблемы увеличения термоэлектрической эффективности поликристаллической керамики несоразмерных слоистых соединений на примере (Gd-=SUB=-x-=/SUB=-Dy-=SUB=-1-x-=/SUB=-S)-=SUB=-z-=/SUB=-NbS-=SUB=-2-=/SUB=-","authors":"В. В. Баковец, А. В. Сотников","doi":"10.21883/ftt.2023.02.54290.508","DOIUrl":"https://doi.org/10.21883/ftt.2023.02.54290.508","url":null,"abstract":"The lattice disorder of different architecture and dimensions influence on the thermoelectric properties (Seebeck coefficient S, resistivity , total thermal conductivity κtot, power factor S2/, figure of merit ZT) of the polycrystalline ternary sulfides MTS3 was studied. The high-temperature misfit layered compounds (MS)zNbS2 (MS is GdxDy1-xS solid solutions) were chosen as objects of the study. The variation of gadolinium concentration along the series x = 0.0, 0.1, 0.2, 0.5, 1.0 allowed one to alter the short-range and the long-range order of the crystal lattice and to study their effect on thermoelectric parameters of (GdxDy1-xS)zNbS2. At low concentration of x = 0.1 the crystallite size increases, cause the deformation stresses decrease and, thereby, leads to an abnormal changes of S, , κtot values and ZT decrease. An increase of the gadolinium concentration (x = 0.2–0.5) alters the electronic structure and the interatomic bonding character of the incommensurate subsystems (GdxDy1-xS) and NbS2. In this case, S and values remains practically unaffected, while the thermal conductivity value decreases by 40% and ZT increases by 2 times. The nature of this phenomenon and the anisotropy of the thermoelectric properties were discussed.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84136148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/ftt.2023.06.55641.25h
Г. В. Курляндская, А. В. Архипов, И. В. Бекетов, А.В. Багазеев, Алексей Сергеевич Волегов, A. Larrananga, Е.А. Михневич, А. В. Свалов
In this work the structure, magnetic properties and of the magnetocaloric effect of the large batches of magnetic FeNi nanoparticles were studied for selected compositions close to the invar. Nanoparticles were synthesized by the method of the electric explosion of wire using various technological parameters ensuring the difference in their dispersion parameters. The main variable parameter was the degree of overheating of the wire material. The use of different technological conditions for obtaining batches of nanoparticles ensured the difference in their dispersion parameters.
{"title":"Магнитокалорический эффект магнитных наночастиц FeNi, полученных методом электрического взрыва проволоки","authors":"Г. В. Курляндская, А. В. Архипов, И. В. Бекетов, А.В. Багазеев, Алексей Сергеевич Волегов, A. Larrananga, Е.А. Михневич, А. В. Свалов","doi":"10.21883/ftt.2023.06.55641.25h","DOIUrl":"https://doi.org/10.21883/ftt.2023.06.55641.25h","url":null,"abstract":"In this work the structure, magnetic properties and of the magnetocaloric effect of the large batches of magnetic FeNi nanoparticles were studied for selected compositions close to the invar. Nanoparticles were synthesized by the method of the electric explosion of wire using various technological parameters ensuring the difference in their dispersion parameters. The main variable parameter was the degree of overheating of the wire material. The use of different technological conditions for obtaining batches of nanoparticles ensured the difference in their dispersion parameters.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"68 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84668691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/ftt.2023.09.56241.60
Е. А. Вилков, С. Г. Чигарев, О. А. Бышевский-Конопко
The modes of occurrence of Three-band electromagnetic oscillations during the flow of current in magnetic nanocontacts and in a heterogeneous Fe/Mo structure with a heavy metal nanofilm are compared, and the similarity of the dependences of the change in radiated power on the change in current in the region of radiation occurrence is established. Based on this, a conclusion is made about the identity of the processes of THz radiation formation in the structures under study and the possibility of spreading physical ideas about the excitation of THz radiation during spin injection by current in the case of a heterogeneous Fe/Mo structure with a heavy metal nanofilm.
{"title":"Сходство механизмов возбуждения THz-излучения в магнитных наноконтактах и в наногетероструктуре с тяжелым металлом Мо","authors":"Е. А. Вилков, С. Г. Чигарев, О. А. Бышевский-Конопко","doi":"10.21883/ftt.2023.09.56241.60","DOIUrl":"https://doi.org/10.21883/ftt.2023.09.56241.60","url":null,"abstract":"The modes of occurrence of Three-band electromagnetic oscillations during the flow of current in magnetic nanocontacts and in a heterogeneous Fe/Mo structure with a heavy metal nanofilm are compared, and the similarity of the dependences of the change in radiated power on the change in current in the region of radiation occurrence is established. Based on this, a conclusion is made about the identity of the processes of THz radiation formation in the structures under study and the possibility of spreading physical ideas about the excitation of THz radiation during spin injection by current in the case of a heterogeneous Fe/Mo structure with a heavy metal nanofilm.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84746681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/ftt.2023.03.54733.553
Ю. В. Горюнов, А.Н. Натепров
In the literature devoted to magnetic impurities in Dirac semimetals, the appearance of anisotropic and long-range non-oscillating contributions to the Ruderman–Kittel–Kasuya–Yosida interaction is predicted. These contributions are due to the hybridization of the wave functions of magnetic impurities with the wave functions of Dirac electrons, which have a linear dispersion law. We have studied electron paramagnetic resonance (EPR) in powder samples of topological 3D Dirac semimetal Cd3As2 with an admixture of chromium ions. Anisotropy of the magnetic susceptibility in the paramagnetic state was found from the behavior of the resonance field. The appearance of magnetic anisotropy in the paramagnetic state is associated with an increase in the contribution of the orbital moments of chromium ions Cr2+ and Cr3+ due to their interaction with the orbital moments of donor Dirac electrons, which have anomalously large values of g factors.
{"title":"Анизотропия парамагнитной восприимчивости дираковского полуметалла Cd-=SUB=-3-=/SUB=-As-=SUB=-2-=/SUB=-, обусловленная примесью хрома: ЭПР на ионах Cr-=SUP=-3+-=/SUP=-","authors":"Ю. В. Горюнов, А.Н. Натепров","doi":"10.21883/ftt.2023.03.54733.553","DOIUrl":"https://doi.org/10.21883/ftt.2023.03.54733.553","url":null,"abstract":"In the literature devoted to magnetic impurities in Dirac semimetals, the appearance of anisotropic and long-range non-oscillating contributions to the Ruderman–Kittel–Kasuya–Yosida interaction is predicted. These contributions are due to the hybridization of the wave functions of magnetic impurities with the wave functions of Dirac electrons, which have a linear dispersion law. We have studied electron paramagnetic resonance (EPR) in powder samples of topological 3D Dirac semimetal Cd3As2 with an admixture of chromium ions. Anisotropy of the magnetic susceptibility in the paramagnetic state was found from the behavior of the resonance field. The appearance of magnetic anisotropy in the paramagnetic state is associated with an increase in the contribution of the orbital moments of chromium ions Cr2+ and Cr3+ due to their interaction with the orbital moments of donor Dirac electrons, which have anomalously large values of g factors.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"66 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86944589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/ftt.2023.09.56246.152
Л. А. Иртюго, Л. Т. Денисова, Г. В. Васильев, В. М. Денисов
LiScGeO 4 and LiScSiO 4 compounds were obtained by solid-phase synthesis from Li 2 CO 3 , Sc 2 O 3 , GeO 2 (SiO 2 ). Their crystal structure has been refined using X-ray diffraction. The high-temperature heat capacity (320–1050 K) of the obtained lithium-scandium germanate and silicate was measured by differential scanning calorimetry. The thermodynamic properties were calculated based on the experimental data about heat capacity.
{"title":"Высокотемпературная теплоемкость Li, Sc-германата LiScGeO-=SUB=-4-=/SUB=- и Li, Sc-силиката LiScSiO-=SUB=-4-=/SUB=-","authors":"Л. А. Иртюго, Л. Т. Денисова, Г. В. Васильев, В. М. Денисов","doi":"10.21883/ftt.2023.09.56246.152","DOIUrl":"https://doi.org/10.21883/ftt.2023.09.56246.152","url":null,"abstract":"LiScGeO 4 and LiScSiO 4 compounds were obtained by solid-phase synthesis from Li 2 CO 3 , Sc 2 O 3 , GeO 2 (SiO 2 ). Their crystal structure has been refined using X-ray diffraction. The high-temperature heat capacity (320–1050 K) of the obtained lithium-scandium germanate and silicate was measured by differential scanning calorimetry. The thermodynamic properties were calculated based on the experimental data about heat capacity.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91179332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/ftt.2023.06.55645.02h
Е.В. Васинович, А. С. Москвин
A simple theory of spontaneous spin reorientation in rare-earth orthoferrites RFeO3 and orthochromites RCrO3 induced by 4f-3d interaction is presented. It is shown that both the temperature and the nature of the spin reorientation are the result of the competition between the second- and fourth-order spin anisotropy of the 3d sublattice, the crystal field for 4f-ions, and also the 4f-3d interaction. A case of the substitution of the rare-earth ions with a non-magnetic impurity is also considered.
{"title":"Простая спин-переориентационная модель редкоземельных ортоферритов и ортохромитов","authors":"Е.В. Васинович, А. С. Москвин","doi":"10.21883/ftt.2023.06.55645.02h","DOIUrl":"https://doi.org/10.21883/ftt.2023.06.55645.02h","url":null,"abstract":"A simple theory of spontaneous spin reorientation in rare-earth orthoferrites RFeO3 and orthochromites RCrO3 induced by 4f-3d interaction is presented. It is shown that both the temperature and the nature of the spin reorientation are the result of the competition between the second- and fourth-order spin anisotropy of the 3d sublattice, the crystal field for 4f-ions, and also the 4f-3d interaction. A case of the substitution of the rare-earth ions with a non-magnetic impurity is also considered.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91340265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/ftt.2023.04.55297.20
И. П. Щербаков, М. В. Нарыкова, А. Е. Чмель
The thermal expansion coefficient (TEC) of binary glasses SiO 2 -TiO 2 decreases as the TiO 2 concentration grows. At concentration of TiO 2 in the range of 4–6 mol% (in dependence of the applied synthesis method) TEC becomes negative; at concentration of 8–11 mol% devitrification occurs. A combination of photoluminescence (PL) and IR reflection techniques were applied for studying the evolution of point and structural defects in the range of TiO 2 concentration from zero to phase separation. The precision measurements of density showed its drop at TiO 2 content of 7.9 mol% thus evidencing the conversion of glass into a polycrystalline substance consisting of SiO 2 and TiO 2 crystallites. In the TiO 2 concentration range of compatibility of oxides, an ensemble of point defects comprises ≡Si–O – and ≡Ti–O – centers as well as ≡Si–Si≡ and ≡Ti–Ti≡ neutral oxygen-vacancies. At the dopant concentration specific for phase separation (7.9 mol%), the PL-active groups of Si–Ti go away, while the IR-detectable Si–O–Ti bridges remain stable.
{"title":"Эволюция дефектов строения стекол SiO-=SUB=-2-=/SUB=--TiO-=SUB=-2-=/SUB=- при изменении концентрации TiO-=SUB=-2-=/SUB=- от нуля до разделения фаз","authors":"И. П. Щербаков, М. В. Нарыкова, А. Е. Чмель","doi":"10.21883/ftt.2023.04.55297.20","DOIUrl":"https://doi.org/10.21883/ftt.2023.04.55297.20","url":null,"abstract":"The thermal expansion coefficient (TEC) of binary glasses SiO 2 -TiO 2 decreases as the TiO 2 concentration grows. At concentration of TiO 2 in the range of 4–6 mol% (in dependence of the applied synthesis method) TEC becomes negative; at concentration of 8–11 mol% devitrification occurs. A combination of photoluminescence (PL) and IR reflection techniques were applied for studying the evolution of point and structural defects in the range of TiO 2 concentration from zero to phase separation. The precision measurements of density showed its drop at TiO 2 content of 7.9 mol% thus evidencing the conversion of glass into a polycrystalline substance consisting of SiO 2 and TiO 2 crystallites. In the TiO 2 concentration range of compatibility of oxides, an ensemble of point defects comprises ≡Si–O – and ≡Ti–O – centers as well as ≡Si–Si≡ and ≡Ti–Ti≡ neutral oxygen-vacancies. At the dopant concentration specific for phase separation (7.9 mol%), the PL-active groups of Si–Ti go away, while the IR-detectable Si–O–Ti bridges remain stable.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"627 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90121602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/ftt.2023.04.55310.21
С. П. Зимин, И. И. Амиров, Mikhail Tivanov, Николай Николаевич Колесников, О. В. Королик, Людмила Сергеевна Ляшенко, Д. В. Жигулин, Л. А. Мазалецкий, Станислав Викторович Васильев, О.B. Савенко
The effect of ion-plasma treatment on the physical properties of the surface of GaTe crystals is investigated. Gallium telluride crystals were grown by vertical zone melting under the pressure of an inert argon gas of 10.0 MPa at a temperature of 1000 °C and a zone displacement velocity of 9 mm/hr. The treatment was carried out in argon plasma in a high-density low-pressure radio frequency (RF) inductively coupled plasma reactor at an argon ion energy of 100-200 eV for 15-120 s. Using scanning electron microscopy methods, it was shown that the formation of nano- and submicron structures of various architectures (nanohillocks, nanocones, droplet structures) occurred on the surface during processing. It is shown that the sputtering processes are accompanied by enrichment of the near-surface layer with metal atoms and a decrease in oxygen content. The formation of nano- and submicron gallium droplets on the surface has been proved by X-ray diffractometry. The analysis of the raman scattering spectra showed a decrease in the oxide phases of tellurium after plasma treatment. It is established that modification of the GaTe surface leads to suppression of specular optical reflection in the range of 0.4-6.2 eV.
{"title":"Морфология поверхности и структурные свойства кристаллов GaTe после ионно-плазменной обработки","authors":"С. П. Зимин, И. И. Амиров, Mikhail Tivanov, Николай Николаевич Колесников, О. В. Королик, Людмила Сергеевна Ляшенко, Д. В. Жигулин, Л. А. Мазалецкий, Станислав Викторович Васильев, О.B. Савенко","doi":"10.21883/ftt.2023.04.55310.21","DOIUrl":"https://doi.org/10.21883/ftt.2023.04.55310.21","url":null,"abstract":"The effect of ion-plasma treatment on the physical properties of the surface of GaTe crystals is investigated. Gallium telluride crystals were grown by vertical zone melting under the pressure of an inert argon gas of 10.0 MPa at a temperature of 1000 °C and a zone displacement velocity of 9 mm/hr. The treatment was carried out in argon plasma in a high-density low-pressure radio frequency (RF) inductively coupled plasma reactor at an argon ion energy of 100-200 eV for 15-120 s. Using scanning electron microscopy methods, it was shown that the formation of nano- and submicron structures of various architectures (nanohillocks, nanocones, droplet structures) occurred on the surface during processing. It is shown that the sputtering processes are accompanied by enrichment of the near-surface layer with metal atoms and a decrease in oxygen content. The formation of nano- and submicron gallium droplets on the surface has been proved by X-ray diffractometry. The analysis of the raman scattering spectra showed a decrease in the oxide phases of tellurium after plasma treatment. It is established that modification of the GaTe surface leads to suppression of specular optical reflection in the range of 0.4-6.2 eV.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89573024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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