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Ratio of Compressive Strength to Fracture Toughness for Nanostructured Silicon-Containing ATZS Ceramics 纳米结构含硅ATZS陶瓷的抗压强度与断裂韧性之比
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2025-04-30 DOI: 10.1134/S1063774524602806
A. A. Dmitrievskiy, N. Y. Efremova, A. N. Grigoryev, P. N. Ovchinnikov, N. G. Polyushko, K. S. Dunaev
{"title":"Ratio of Compressive Strength to Fracture Toughness for Nanostructured Silicon-Containing ATZS Ceramics","authors":"A. A. Dmitrievskiy,&nbsp;N. Y. Efremova,&nbsp;A. N. Grigoryev,&nbsp;P. N. Ovchinnikov,&nbsp;N. G. Polyushko,&nbsp;K. S. Dunaev","doi":"10.1134/S1063774524602806","DOIUrl":"10.1134/S1063774524602806","url":null,"abstract":"<p>The structure, phase composition, and mechanical properties of alumina toughened zirconia with a silica addition (ATZS), as well as Aidite AiZir ceramics, used to manufacture dental crowns, have been investigated. It is shown that the developed ATZS ceramics, containing 2 or 3 mol % silica, exceed Aidite AiZir by 130% in fracture toughness and by 10 and 4%, respectively, in compressive strength, while being inferior in hardness by 14 and 13%, respectively. The high mechanical properties of ATZS ceramics, as well as their ability to transformation-induced plasticity and increased resistance to low-temperature degradation, indicate good prospects of their use as an alternative import-substituting dental material.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 1 supplement","pages":"S105 - S111"},"PeriodicalIF":0.6,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
It Is Dissymmetry That Creates Phenomena 是不对称创造了现象
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2025-04-30 DOI: 10.1134/S1063774525600279
N. M. Shchagina
{"title":"It Is Dissymmetry That Creates Phenomena","authors":"N. M. Shchagina","doi":"10.1134/S1063774525600279","DOIUrl":"10.1134/S1063774525600279","url":null,"abstract":"<p>The paper is devoted to the works in the field of symmetry and dissymmetry of crystals, carried out by the prominent crystallographer, founder, and first director of the Institute of Crystallography of the USSR Academy of Sciences, Academician Aleksei Vasil’evich Shubnikov. Throughout all his creative life (about 57 years) A.V. Shubnikov returned to this topic, starting with 1911. He, as well as the other outstanding scientist, Academician Vladimir Ivanovich Vernadsky, believed the problem of dissymmetry to be very important but little studied. The results of Shubnikov’s studies in this field of great importance and can be used in practical purposes.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 1 supplement","pages":"S126 - S131"},"PeriodicalIF":0.6,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of New Monoclonal Antibodies against Cytotoxic T-Lymphocyte Antigen-4 抗细胞毒性t淋巴细胞抗原-4单克隆抗体的研制
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2025-04-30 DOI: 10.1134/S1063774524602892
A. V. Demyanov, L. A. Garaeva, E. V. Sergeeva, A. V. Nikitina, E. D. Putevich, S. S. Emelianova, A. S. Spitsyna, L. A. Solomina, A. S. Potyseva, A. V. Volnitskij, A. M. Solianik, Zh. Yu. Sidorova, A. V. Zhahov, V. S. Burdakov, N. A. Verlov, V. V. Kvanchiani, A. L. Konevega, T. A. Shtam
{"title":"Development of New Monoclonal Antibodies against Cytotoxic T-Lymphocyte Antigen-4","authors":"A. V. Demyanov,&nbsp;L. A. Garaeva,&nbsp;E. V. Sergeeva,&nbsp;A. V. Nikitina,&nbsp;E. D. Putevich,&nbsp;S. S. Emelianova,&nbsp;A. S. Spitsyna,&nbsp;L. A. Solomina,&nbsp;A. S. Potyseva,&nbsp;A. V. Volnitskij,&nbsp;A. M. Solianik,&nbsp;Zh. Yu. Sidorova,&nbsp;A. V. Zhahov,&nbsp;V. S. Burdakov,&nbsp;N. A. Verlov,&nbsp;V. V. Kvanchiani,&nbsp;A. L. Konevega,&nbsp;T. A. Shtam","doi":"10.1134/S1063774524602892","DOIUrl":"10.1134/S1063774524602892","url":null,"abstract":"<p>A promising strategy for cancer immunotherapy involves blocking the cytotoxic T-lymphocyte-associated antigen-4 (CTLA-4) signaling pathway to enhance the antitumor activity of lymphocytes. This method is based on using drugs that interfere with proteins that suppress immune responses in the human body. CTLA-4 is a key protein involved in regulating the immune response, and it is a homolog of the CD28 receptor that is also involved in activating T cells. CTLA-4 can negatively regulate signaling in T cells by competing with the CD28 co-stimulatory ligand. CTLA is expressed on T regulatory cells (Tregs), indicating its importance in both direct and indirect immune suppression by Tregs. Developing monoclonal antibody preparations that block CTLA-4 represents an urgent task for developing new antitumor therapies. These molecules provide a promising foundation for developing theranostic radiopharmaceuticals, which can be used for both diagnosing and treating malignant tumors. In this article, we describe the development process and outcomes of in vitro and in vivo studies on a novel monoclonal antibody targeting human CTLA-4.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 1 supplement","pages":"S38 - S45"},"PeriodicalIF":0.6,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Variation in the Martensitic Transformation Temperatures and Dislocation Density on Thermal Cycling of Quenched Ni51Ti49 Alloy 淬火Ni51Ti49合金热循环马氏体相变温度和位错密度的变化
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2025-04-30 DOI: 10.1134/S1063774525600097
S. P. Belyaev, N. N. Resnina, I. V. Ponikarova, A. V. Sibirev
{"title":"Variation in the Martensitic Transformation Temperatures and Dislocation Density on Thermal Cycling of Quenched Ni51Ti49 Alloy","authors":"S. P. Belyaev,&nbsp;N. N. Resnina,&nbsp;I. V. Ponikarova,&nbsp;A. V. Sibirev","doi":"10.1134/S1063774525600097","DOIUrl":"10.1134/S1063774525600097","url":null,"abstract":"<p>The aim of the paper was to study the relation between variation in the dislocation density and martensitic transformation temperatures on thermal cycling of the quenched Ni<sub>51</sub>Ti<sub>49</sub> alloy undergoing the <i>B</i>2 ↔ <i>B</i>19' martensitic transformation. The results showed that the transformation temperatures decreased on thermal cycling. At the same time, the dislocation density sharply increased during first 40 cycles, then it decreased by the 100th cycle and increased again on further cycling from 100 to 500 cycles. Thus, a variation in the dislocation density was not the only reason for a variation in the martensitic transformation temperatures on thermal cycling.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 1 supplement","pages":"S66 - S70"},"PeriodicalIF":0.6,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Vacancies and Copper Ordering in Al–Cu alloys Al-Cu合金中的空位和铜的有序
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2025-04-30 DOI: 10.1134/S1063774525600176
T. Inerbaev, T. Konno, Y. Kawazoe
{"title":"Vacancies and Copper Ordering in Al–Cu alloys","authors":"T. Inerbaev,&nbsp;T. Konno,&nbsp;Y. Kawazoe","doi":"10.1134/S1063774525600176","DOIUrl":"10.1134/S1063774525600176","url":null,"abstract":"<p>A vacancy-induced mechanism of copper aggregate formation in Al–Cu alloy is proposed. For this purpose, various Cu cluster configurations in bulk Al lattice were explored in the framework of the density functional theory within the projector augmented plane-wave method and generalized gradient approximation. Investigation of different models of small copper clusters in 4 × 4 × 4 Al supercells containing totally 256 atoms reveals that the most energy-favorable configurations correspond to flat copper aggregates aligned along the 100-degree plane. Vacancies play a critical role in copper ordering in the Al–Cu alloy. It is found that vacancies preferably localize in the vicinity of Cu clusters and make them less soluble in the aluminum lattice. During the process of Cu aggregation, there are two competing effects. On one hand, raising the Cu atom number in the cluster decreases the mixing enthalpy, stabilizes ordered Cu structures in the Al lattice, and impedes Cu atom diffusion from the aggregate. On the other hand, vacancies near small Cu clusters result in the increment of the Al–Cu mixing enthalpy to positive values and make copper clusters insoluble in aluminum lattice. This effect makes small Cu clusters diffuse through solute to aggregate with other small clusters until large enough stable Cu aggregate will be formed.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 1 supplement","pages":"S89 - S97"},"PeriodicalIF":0.6,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of Severe Plastic Deformation on Magnetic Properties of Holmium and Erbium 剧烈塑性变形对钬、铒磁性能的影响
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2025-04-30 DOI: 10.1134/S1063774525600188
D. S. Bataev, M. A. Orshulevich, M. V. Utarbekova, A. G. Fazlitdinova, K. P. Skokov, D. V. Gunderov, V. V. Khovaylo, S. V. Taskaev
{"title":"Influence of Severe Plastic Deformation on Magnetic Properties of Holmium and Erbium","authors":"D. S. Bataev,&nbsp;M. A. Orshulevich,&nbsp;M. V. Utarbekova,&nbsp;A. G. Fazlitdinova,&nbsp;K. P. Skokov,&nbsp;D. V. Gunderov,&nbsp;V. V. Khovaylo,&nbsp;S. V. Taskaev","doi":"10.1134/S1063774525600188","DOIUrl":"10.1134/S1063774525600188","url":null,"abstract":"<p>In this work we report on structural and magnetic properties of Ho and Er samples severely deformed by means of high-pressure torsion. It was found that severe plastic deformation results in the formation of an ultrafine-grained structure and broadening of diffraction peaks due to the accumulation of crystal lattice defects. Magnetic measurements revealed that severe plastic deformation leads to an increase in the saturation magnetic field in holmium and the disappearance of a metamagnetic transition in erbium.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 1 supplement","pages":"S46 - S51"},"PeriodicalIF":0.6,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magnetically Active Composite Aerogels Based on Graphene Oxide Modified with Iron Oxide Nanoparticles: Synthesis, Physicochemical and Magnetic Characteristics 基于氧化铁纳米粒子修饰的氧化石墨烯的磁活性复合气凝胶：合成、物理化学和磁性
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2025-04-30 DOI: 10.1134/S1063774525600164
A. T. Morchenko, A. V. Babkin, E. A. Neskoromnaya, V. G. Kostishin, A. L. Tkachenya, I. N. Burmistrov, B. B. Khaidarov, V. A. Astakhov, A. N. Semin
{"title":"Magnetically Active Composite Aerogels Based on Graphene Oxide Modified with Iron Oxide Nanoparticles: Synthesis, Physicochemical and Magnetic Characteristics","authors":"A. T. Morchenko,&nbsp;A. V. Babkin,&nbsp;E. A. Neskoromnaya,&nbsp;V. G. Kostishin,&nbsp;A. L. Tkachenya,&nbsp;I. N. Burmistrov,&nbsp;B. B. Khaidarov,&nbsp;V. A. Astakhov,&nbsp;A. N. Semin","doi":"10.1134/S1063774525600164","DOIUrl":"10.1134/S1063774525600164","url":null,"abstract":"<p>An innovative technology for the synthesis of magnetically active highly porous carbon aerogels is proposed. The structure and magnetic properties of these aerogels have been studied using scanning and transmission electron microscopy, as well as X-ray and Mössbauer spectroscopy and magnetometry. Additionally, the thermal conductivity and microwave properties of aerogel-based polymer composites have been investigated. The potential applications of these materials in various fields are discussed.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 1 supplement","pages":"S112 - S125"},"PeriodicalIF":0.6,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Single-Crystal X-ray Diffraction Structure Analysis of PbNi1/3Ta2/3O3 Relaxor Ferroelectric at Room Temperature 室温下PbNi1/3Ta2/3O3弛豫铁电单晶x射线衍射结构分析
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2025-04-30 DOI: 10.1134/S1063774525600012
A. A. Levin, M. G. Krzhizhanovskaya, T. A. Smirnova, S. G. Lushnikov
{"title":"Single-Crystal X-ray Diffraction Structure Analysis of PbNi1/3Ta2/3O3 Relaxor Ferroelectric at Room Temperature","authors":"A. A. Levin,&nbsp;M. G. Krzhizhanovskaya,&nbsp;T. A. Smirnova,&nbsp;S. G. Lushnikov","doi":"10.1134/S1063774525600012","DOIUrl":"10.1134/S1063774525600012","url":null,"abstract":"<p>The structure of four single crystals of relaxor ferroelectric of nominal composition PbNi<sub>1/3</sub>Ta<sub>2/3</sub>O<sub>3</sub> have been studied by single-crystal X-ray diffraction at room temperature (cubic perovskite structure, space group <span>(Pmbar {3}m~left( {221} right),~)</span> unit cell parameter <i>a</i> = 4.0287–4.0318 Å for different single crystals, refined to agreement factors <i>R</i>1 = 1.05–1.62%). The structural peculiarities (shift of the Pb atom from the ideal perovskite Wyckoff position 1<i>a</i> (0, 0, 0) by ~0.23 Å due to disordering of the atoms over six close-spaced Wyckoff sites 6<i>e</i> (<i>x</i>, 0, 0) along 〈100〉, deviation of the composition from the nominal one, etc.) are discussed.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 1 supplement","pages":"S9 - S16"},"PeriodicalIF":0.6,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Features of the Influence of Atomic Ordering on the Structural and Magnetic Properties of the Heusler Alloy Ni2Mn1.5Sn0.5 原子有序对Heusler合金Ni2Mn1.5Sn0.5结构和磁性能影响的特征
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2025-04-30 DOI: 10.1134/S1063774525600127
K. R. Erager, V. V. Sokolovskiy, V. D. Buchelnikov
{"title":"Features of the Influence of Atomic Ordering on the Structural and Magnetic Properties of the Heusler Alloy Ni2Mn1.5Sn0.5","authors":"K. R. Erager,&nbsp;V. V. Sokolovskiy,&nbsp;V. D. Buchelnikov","doi":"10.1134/S1063774525600127","DOIUrl":"10.1134/S1063774525600127","url":null,"abstract":"<p>The effect of atomic ordering on the structural and magnetic properties of the crystal structures of the austenite and martensite phases of the Heusler alloy Ni<sub>2</sub>Mn<sub>1.5</sub>Sn<sub>0.5</sub> has been studied within the density functional theory (DFT). The cubic <i>L</i>2<sub>1</sub>, tetragonal <i>L</i>1<sub>0</sub>, and orthorhombic 4O structures are considered. The <i>L</i>2<sub>1</sub> phase demonstrates a lower stability in view of its higher energy with respect to the <i>L</i>1<sub>0</sub> and 4O phases. The presence of the antiferromagnetic plane containing Mn atoms in the computational box of <i>L</i>1<sub>0</sub> makes it less favorable by 10 meV/atom in comparison with the 4O phase. However, dilution of the antiferromagnetic plane with Sn atoms leads to increasing stability of the <i>L</i>1<sub>0</sub> structure. An energetically favorable atomic configuration was predicted, at which the <i>L</i>1<sub>0</sub> structure becomes more favorable by 21 meV/atom than the 4O structure. The obtained results qualitatively describe the existing experimental data.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 1 supplement","pages":"S1 - S8"},"PeriodicalIF":0.6,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Domain Structure of Y2(FexCo1–x)17 Compounds and Their Hydrides: Qualitative and Quantitative Analysis Y2(FexCo1-x)17化合物及其氢化物的畴结构：定性和定量分析
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2025-04-30 DOI: 10.1134/S1063774525600048
A. I. Sinkevich, S. D. Smetannikova, E. M. Semenova, A. Yu. Karpenkov, D. Yu. Karpenkov, Yu. G. Pastushenkov
{"title":"Domain Structure of Y2(FexCo1–x)17 Compounds and Their Hydrides: Qualitative and Quantitative Analysis","authors":"A. I. Sinkevich,&nbsp;S. D. Smetannikova,&nbsp;E. M. Semenova,&nbsp;A. Yu. Karpenkov,&nbsp;D. Yu. Karpenkov,&nbsp;Yu. G. Pastushenkov","doi":"10.1134/S1063774525600048","DOIUrl":"10.1134/S1063774525600048","url":null,"abstract":"<p>The quasi-binary Y<sub>2</sub>(Fe<sub><i>x</i></sub>Co<span>(_{{1-x}})</span>)<sub>17</sub> compounds possess the easy-axis anisotropy type in a wide compositional range <i>x</i> = 0.05–0.50. The hydrogenation process of these compounds leads to a change in the magnetic characteristics—an increase in the Curie temperature and a variation in the values of the magnetocrystalline anisotropy constants. This work presents the complex investigation of the magnetic domain structure of both the original and hydrogenated samples of the Y<sub>2</sub>(Fe<sub><i>x</i></sub>Co<span>(_{{1-x}})</span>)<sub>17</sub> compounds. Qualitative comparative analyses and micromagnetic calculations were carried out.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 1 supplement","pages":"S52 - S60"},"PeriodicalIF":0.6,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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