Физика твердого тела最新文献_第5页

Нестационарная фотоэдс в периодически поляризованном кристалле MgO : LiNbO-=SUB=-3-=/SUB=-

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.02.54291.519

М.А. Брюшинин, В. В. Куликов, И.А. Соколов, Е. Н. Савченков, Н. И. Буримов, С. М. Шандаров, А. Р. Ахматханов, М.А. Чувакова, В. Я. Шур

引用次数: 0

Прецессионная динамика намагниченности одноосной наночастицы в области ферромагнитного резонанса 铁磁共振区域单轴纳米微粒磁化动力学

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.06.55664.56

А. М. Шутый, Т.М. Василевская, Дмитрий Игоревич Семенцов, С. В. Елисеева

引用次数: 0

Механические свойства и теплопроводность композитов на основе скомканного графена и наночастиц никеля: молекулярная динамика 复合石墨和镍纳米颗粒的机械性能和热传导:分子动力学

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.09.56256.101

К.А. Крылова, Л.Р. Сафина, Р. Т. Мурзаев, С. А. Щербинин, Ю.А. Баимова, Р. Р. Мулюков

{"title":"Механические свойства и теплопроводность композитов на основе скомканного графена и наночастиц никеля: молекулярная динамика","authors":"К.А. Крылова, Л.Р. Сафина, Р. Т. Мурзаев, С. А. Щербинин, Ю.А. Баимова, Р. Р. Мулюков","doi":"10.21883/ftt.2023.09.56256.101","DOIUrl":"https://doi.org/10.21883/ftt.2023.09.56256.101","url":null,"abstract":"The mechanical properties and thermal conductivity of a composite based on crumpled graphene flakes and nickel nanoparticles obtained by high-temperature hydrostatic compression are investigated by the method of molecular dynamics. The pores of the graphene matrix of the composite are filled with nickel nanoparticles of different sizes (respectively, different contents of Ni - 8, 16 and 24 at.%). It was found that an increase in the amount of nickel on the one hand increases the thermal conductivity of the composite, and on the other hand reduces its strength, since strength is determined by the presence of a graphene grid, and thermal conductivity is determined by the presence of a conductive metal. The obtained results on thermophysical properties combined with high mechanical characteristics of Ni/graphene composites allow us to predict their application for the manufacture of new flexible electronics, supercapacitors and lithium-ion batteries.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87533872","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}

引用次数: 0

Влияние внешних воздействий на ползучесть алюминиевых сплавов с микроскопическими включениями при комнатных температурах 外部影响铝合金的蠕变，在室温下微量激活铝合金。

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.04.55286.549

М. Friha, Д.Е. Пшонкин, П.А. Скворцов, В.К. Николаев, А. А. Скворцов

{"title":"Влияние внешних воздействий на ползучесть алюминиевых сплавов с микроскопическими включениями при комнатных температурах","authors":"М. Friha, Д.Е. Пшонкин, П.А. Скворцов, В.К. Николаев, А. А. Скворцов","doi":"10.21883/ftt.2023.04.55286.549","DOIUrl":"https://doi.org/10.21883/ftt.2023.04.55286.549","url":null,"abstract":"It is devoted to the experimental study of the creep of an aluminum alloy containing microscopic inclusions. It was found that preliminary electric ignition (j<3· 106 A/m2) of the material leads to an increase in the creep of the samples. The reasons for the observed changes are associated by the authors with the formation of local areas of high mechanical stresses near the interface of the inclusion - matrix interface. The assessment of the level of emerging local thermoelastic stresses in aluminum deltaT ~ 35 MPa, as well as the characteristic size of such areas (~ 2 µm). The observed increase in creep is determined by the resultant effect of residual stresses and stresses of thermal nature, which contributes to the creation of additional local sources of deformation in the interfacial regions. Local stress concentrators lead to a local increase in the number of mobile dislocations, which is the main reason for the change in the mechanical properties of the aluminum alloy under consideration with microscopic inclusions.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85578428","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}

引用次数: 0

Микроструктура сферолитовых тонких пленок цирконата-титаната свинца 圆球薄膜钛铅微结构

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.08.56155.140

М. В. Старицын, В. П. Пронин, И.И. Хинич, С.В. Сенкевич, Е.Ю. Каптелов, И. П. Пронин, А.С. Елшин, Е. Д. Мишина

引用次数: 0

Влияние скорости ориентационной вытяжки на пьезоэлектрические свойства в короноэлектретах на основе сополимера винилиденфторид-тетрафторэтилен 共聚合物四氟乙烯对压电牵引率的影响

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.01.53929.482

Юрий Андреевич Гороховатский, Д. Э. Темнов, Ю И Сотова

引用次数: 0

Влияние массива субмикронных магнитных точек на намагниченность, критический ток и структуру вихревых конфигураций в ВТСП 亚微米磁点对vcp的磁化、临界电流和涡流结构的影响

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.04.55287.500

Анастасия Н. Максимова, Игорь А. Руднев, Владимир А. Кашурников, Александр Николаевич Мороз

{"title":"Влияние массива субмикронных магнитных точек на намагниченность, критический ток и структуру вихревых конфигураций в ВТСП","authors":"Анастасия Н. Максимова, Игорь А. Руднев, Владимир А. Кашурников, Александр Николаевич Мороз","doi":"10.21883/ftt.2023.04.55287.500","DOIUrl":"https://doi.org/10.21883/ftt.2023.04.55287.500","url":null,"abstract":"A vortex lattice in a high-temperature superconductor (HTS) with an array of submicron magnetic dots on the surface has been studied by the Monte Carlo method within the framework of a three-dimensional model of a layered high-temperature superconductor. The adjustment of the vortex lattice to an array of magnetic points was observed — ordered states arising in the process of remagnetization — configurations of one, two, three, or more vortex filaments fixed to a single magnetic point. The occurrence of these configurations was accompanied by peaks on the magnetization curve. The influence of the HTS anisotropy on the adjustment of the vortex lattice is analyzed. The ordered configurations of the vortex lattice are also associated with the non-monotonic nature of the dependences of the superconductor critical current on the magnetic field. The influence of temperature, magnetic moment of points, and film thickness on the critical current is investigated. With an increase in temperature and a decrease in the magnetization of magnetic points, the maximum of the critical current shifts towards a lower field. The structure of vortex filaments in the inhomogeneous field of a magnetic point is analyzed in detail. The mechanism of the influence of ordered vortex configurations on magnetization and critical current is discussed.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80753713","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}

引用次数: 0

Фазовые переходы в фрустрированном кобальтите TmBaCo-=SUB=-4-=/SUB=-O-=SUB=-7-=/SUB=- -= ytet -伊甸园字幕组=-翻译:

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.09.56257.138

З. А. Казей, В. В. Снегирев, М. С. Столяренко

{"title":"Фазовые переходы в фрустрированном кобальтите TmBaCo-=SUB=-4-=/SUB=-O-=SUB=-7-=/SUB=-","authors":"З. А. Казей, В. В. Снегирев, М. С. Столяренко","doi":"10.21883/ftt.2023.09.56257.138","DOIUrl":"https://doi.org/10.21883/ftt.2023.09.56257.138","url":null,"abstract":"For the first time, changes in lattice parameters (metrics) during a structural transition in stoichiometric cobalt TmBaCo4O7+x with x~ 0 (iodometric titration method) obtained by quenching from 900-950oC were investigated by direct X-ray method. It was found that during the structural transition TS~220-240 K, the Delta a/a parameter does not detect any features, parameters b and c experience jumps of different sign and different magnitude Delta b/b~3.5·10-3 and Delta c/c~-4.0·10-3, which leads to a jump in the volume of Delta V/V~ -0.5·10-3. The distortion value eo ~ -3.5·10-3 remains constant with increasing temperature and disappears abruptly during the transition.The distortion of the structure is accompanied by abnormal behavior of the Young's Delta E(T)/E0 module in the TS region. In the region of the expected magnetic phase transition of the cobalt subsystem, anomalies on the Young's modulus curve Delta E(T)/E0 were not detected, and a strong absorption peak at T~ 96 K on the internal friction dependence q-1(T) is, apparently, a sign of a developed short-range order.","PeriodicalId":24077,"journal":{"name":"Физика твердого тела","volume":"33 9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82780488","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}

引用次数: 0

Идентификация парамагнитных центров гадолиния и железа в ортосиликатах скандия и иттрия scandia和ittria正交硅酸盐中超磁性中心的鉴定

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.05.55494.45

В. А. Важенин, А. П. Потапов, К. А. Субботин, А. В. Фокин, М.Ю. Артёмов, Андрей Игоревич Титов, С. К. Павлов

引用次数: 0

Исследование распространения спиновых волн в системе гофрированный волновод-планарный волновод при изменении параметров модуляции 自旋波传播研究，波导-平面波导改变调制参数

Физика твердого тела Pub Date : 2023-01-01 DOI: 10.21883/ftt.2023.07.55840.43h

Виктор Андреевич Губанов, А. В. Кострикин, Александр Владимирович Садовников

引用次数: 0