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Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy最新文献

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Electron Diffraction Study of the Local Atomic Arrangement in Amorphous Gallium Films 非晶镓薄膜中局部原子排列的电子衍射研究
Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy Pub Date : 1973-09-16 DOI: 10.1002/PSSA.2210190136
T. Ichikawa
{"title":"Electron Diffraction Study of the Local Atomic Arrangement in Amorphous Gallium Films","authors":"T. Ichikawa","doi":"10.1002/PSSA.2210190136","DOIUrl":"https://doi.org/10.1002/PSSA.2210190136","url":null,"abstract":"Thin films of amorphous gallium have been prepared by low temperaturecondensation in high vacuum, and a transmission electron diffraction study of them has been undertaken. A radial distribution analysis from the very diffuse halo patterns obtained has been carried out in order to investigate the local atomic arrangement in amorphous gallium. W(r) ( q(r)/q0) has been compared with W(r)'s calculated from several crystalline models, leading to the conclusion that the structure in question is considerably similar to highly disordered β-gallium. \u0000 \u0000 \u0000 \u0000Dunne Schichten von amorphem Gallium werden durch Verdampfung im Hochvakuum auf mit flussigem Helium gekuhlten Substraten hergestellt und Elektronenbeugungsuntersuchungen durchgefuhrt. Eine Analyse der radialen Verteilung wurde durchgefuhrt, um die Nahordnung eines Atoms in amorphem Gallium zu untersuchen. Die gewonnenen W(r)-Werte werden mit den mit verschiedenen Kristallmodellen berechneten W(r)-Werten verglichen und geschlossen, das die Struktur von amorphem Gallium der von stark ungeordnetem β-Gallium sehr ahnlich ist.","PeriodicalId":21586,"journal":{"name":"Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy","volume":"140 1","pages":"95-95"},"PeriodicalIF":0.0,"publicationDate":"1973-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86598943","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: 22
Effective Interionic Pair Potentials and Properties for Liquid Sodium and Potassium(Physics) 液态钠和钾的有效离子间势及其性质(物理)
Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy Pub Date : 1973-08-01 DOI: 10.1016/0001-6160(73)90022-9
Y. Waseda, K. Suzuki
{"title":"Effective Interionic Pair Potentials and Properties for Liquid Sodium and Potassium(Physics)","authors":"Y. Waseda, K. Suzuki","doi":"10.1016/0001-6160(73)90022-9","DOIUrl":"https://doi.org/10.1016/0001-6160(73)90022-9","url":null,"abstract":"","PeriodicalId":21586,"journal":{"name":"Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy","volume":"108 1","pages":"179"},"PeriodicalIF":0.0,"publicationDate":"1973-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75945421","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: 1
Dislocation Motion in Antiferromagnetic γ-Fe-Mn Alloys 反铁磁γ-Fe-Mn合金中的位错运动
Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy Pub Date : 1973-06-16 DOI: 10.1002/PSSA.2210170235
J. Echigoya
{"title":"Dislocation Motion in Antiferromagnetic γ-Fe-Mn Alloys","authors":"J. Echigoya","doi":"10.1002/PSSA.2210170235","DOIUrl":"https://doi.org/10.1002/PSSA.2210170235","url":null,"abstract":"The plastic deformation of γ-FeMn alloys has been investigated by tensile and stress relaxation tests and transmission electron microscopy. The flow stress increases below the Neel temperature and reaches about 1 kp/mm2 at room temperature, but the activation volume and dislocation configuration do not change. This may be understood by the magnetic friction for dislocation motion in antiferromagnetic γ-FeMn alloys, which is associated with the newly-produced ferromagnetic coupling at the nearest neighbour site rather than a change of the deformation process. \u0000 \u0000 \u0000 \u0000Die plastische Deformation der γ-FeMn-Legierungen wird mittels Dehnungs-, Spannungs-relaxations- und Elektronenmikroskop-Messungen untersucht. Die Fliesspannung nimmt unterhalb der Neel-Temperatur zu und erreicht ungefahr 1 kp/mm2 bei Raumtemperatur, das Aktivierungsvolumen und die Versetzungsanordnung andern sich jedoch nicht. Dieses Verhalten last sich durch magnetische Reibung gegen Versetzungsbewegung in den antiferromagnetischen γ-FeMn-Legierungen eher verstehen als durch Anderung des Deformationsprozesses.","PeriodicalId":21586,"journal":{"name":"Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy","volume":"65 1","pages":"98"},"PeriodicalIF":0.0,"publicationDate":"1973-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91012183","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: 6
Vacancy Ordering in Vanadium Carbides Based on V_6C_5 基于V_6C_5的碳化钒中空位排序
Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy Pub Date : 1973-06-01 DOI: 10.1080/14786437308226888
K. Hiraga
{"title":"Vacancy Ordering in Vanadium Carbides Based on V_6C_5","authors":"K. Hiraga","doi":"10.1080/14786437308226888","DOIUrl":"https://doi.org/10.1080/14786437308226888","url":null,"abstract":"Abstract The ordered arrangement of carbon vacancies in vanadium carbides near V6C5 has been analysed by means of selected-area electron diffraction and high-voltage electron microscopy. A new type of ordered distribution of carbon vacancies is found at non-stoichiometric compositions between V6C5 and V8C7. This structure can be expressed as a longperiod structure consisting of the enantiomorphic domains based on the structure V6C5 which was determined by Billingham. Bell and Lewis (1972). The periodic domain boundaries with spacing eleven times the nearest-neighbour interatomic distance are directly observed by electron microscopy.","PeriodicalId":21586,"journal":{"name":"Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy","volume":"68 1","pages":"92"},"PeriodicalIF":0.0,"publicationDate":"1973-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89511531","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: 34
Interionic Potentials in Liquid Metals Including Liquid Noble and Transition Metals(Physics) 液态金属(包括液态贵金属和过渡金属)的离子间势(物理学)
Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy Pub Date : 1973-05-01 DOI: 10.1002/PSSB.2220570135
Y. Waseda, K. Suzuki
{"title":"Interionic Potentials in Liquid Metals Including Liquid Noble and Transition Metals(Physics)","authors":"Y. Waseda, K. Suzuki","doi":"10.1002/PSSB.2220570135","DOIUrl":"https://doi.org/10.1002/PSSB.2220570135","url":null,"abstract":"The Born-Green equation has been analyzed numerically to derive the effective interionic pair potentials from the structural data observed by X-ray or neutron diffraction experiments for liquid metals (Mg, Zn, Hg, Al, Ga, In, Tl, Sn, Pb, Sb, Bi), noble metals (Cu, Ag, Au), and transition metals (Fe, Ni) using a linearized simultaneous equation method. In all cases the potentials were found to be insensitive to temperature and to have long-ranged oscillations. But the damping behaviour of the oscillations for liquid Sb and Bi remarkably deviates from that of the usual metals such as liquid Na. For most metals, the wavelengths of oscillations observed in this work are in agreement with those expected from the electron theory of metals. The viscosity coefficient and surface tension were calculated. Adequate agreement with experiments was found. \u0000 \u0000 \u0000 \u0000Fur die numerische Berechnung des effektiven, interionaren Paarpotentials flussiger Metalle (Mg, Zn, Hg, Al, Ga, In, Tl, Sn, Pb, Sb, Bi), Edelmetalle (Cu, Ag, Au) und Uber-gangsmetalle (Fe, Ni) aus gemessenen Strukturdaten durch Rontgenbeugung und Neutronenbeugung wird die Born-Greensche Gleichung durch Linearisierung des algebraischen Gleichungssystems analysiert. Es werden in alien Fallen temperaturunabhangige Potentiale vom langreichweitigen, oszillierenden Typ gefunden. Aber das Dampfungsverhalten der Oszillation von flussigem Antimon und Wismut weicht wesentlich von dem der normalen Metalle, wie dem des flussigen Na, ab. Die beobachtete Wellenlange der Oszillationen der anderen Metalle stimmt gut mit den aus der Elektronentheorie der Metalle erwarteten Werten uberein. Der Viskositatskoeffizient und die Oberflachenspannung werden berechnet. Ausreichende Ubereinstimmung mit den Experimenten wurde beobachtet.","PeriodicalId":21586,"journal":{"name":"Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy","volume":"50 1","pages":"179-180"},"PeriodicalIF":0.0,"publicationDate":"1973-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78112613","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: 24
Long Range Ordering of Interstitial Oxygen in Vanadium near V 4 O 钒在v4o附近间隙氧的长程有序
Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy Pub Date : 1973-04-05 DOI: 10.1143/JPSJ.34.965
K. Hiraga, M. Hirabayashi
{"title":"Long Range Ordering of Interstitial Oxygen in Vanadium near V 4 O","authors":"K. Hiraga, M. Hirabayashi","doi":"10.1143/JPSJ.34.965","DOIUrl":"https://doi.org/10.1143/JPSJ.34.965","url":null,"abstract":"The crystal structure of interstitial solid solutions of vanadium with 14–23 at % oxygen has been determined by X-ray and electron diffraction. It is shown that the oxygen atoms occupy regularly the octahedral interstitial sites, forming a body-centered tetragonal superlattice of which the stoichiometry is approximately V 16 O 3 . The unit cell contains a 4×4×2 array of b.c.t. metal subcells with the axial ratio larger than unity. Both the cell dimensions of superlattice and sublattice increase of oxygen concentration. The superstructure is formed 400°C and transforms to another b.c.t. structure with preferential occupation of oxygen atoms like the Fe-C martensite above that temperature.","PeriodicalId":21586,"journal":{"name":"Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy","volume":"20 1","pages":"965-972"},"PeriodicalIF":0.0,"publicationDate":"1973-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78647562","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: 20
The Crystal Data of Ternary Rare Earth Borides, RCo_2B_2 稀土三元硼化物RCo_2B_2的晶体数据
Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy Pub Date : 1973-04-01 DOI: 10.1246/BCSJ.46.1137
K. Niihara, T. Shishido, S. Yajima
{"title":"The Crystal Data of Ternary Rare Earth Borides, RCo_2B_2","authors":"K. Niihara, T. Shishido, S. Yajima","doi":"10.1246/BCSJ.46.1137","DOIUrl":"https://doi.org/10.1246/BCSJ.46.1137","url":null,"abstract":"Compounds with the composition of RCo2B2 (R=La, Nd, Sm, Gd, Tb, Dy, and Y) were prepared by arcmelting methods. Their crystal structure was investigated by means of X-ray diffraction. These ternary rare earth borides crystallize in the tetragonal lattice. The lattice parameters are a=3.616±0.003 A and c=10.215±0.005 A for LaCo2B2 and a=3.561±0.002 A and c=9.358±0.005 A for YCo2B2. The good agreement between the X-ray diffraction intensities observed and those calculated shows that the ternary borides, LaCo2B2 and YCo2-B2, crystallize in the ThCr2Si2-type structure. The crystallographic data obtained for LaCo2B2 and YCo2B2 are as follows: space group 14/mmm(D4h17); 2R in 2(a), 4Co in 4(d), and 4B in 4(e) with z∼3⁄8. The boron atoms in this structure are situated at the center of a trigonal prism formed by four rare earth atoms and two cobalt atoms. We also found the RCo2B2 compounds to be isostructural with LaCo2B2 and YCo2B2, where R=Nd, Sm, Gd, Tb, and Dy. However, efforts to prepare CeCo2B2 and ErCo2B2 ...","PeriodicalId":21586,"journal":{"name":"Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy","volume":"2 1","pages":"252-252"},"PeriodicalIF":0.0,"publicationDate":"1973-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88374179","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: 31
Interstitial Superstructures of Vanadium Deuterides 氘化钒的间隙超结构
Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy Pub Date : 1973-01-16 DOI: 10.1002/PSSA.2210150130
H. Asano, M. Hirabayashi
{"title":"Interstitial Superstructures of Vanadium Deuterides","authors":"H. Asano, M. Hirabayashi","doi":"10.1002/PSSA.2210150130","DOIUrl":"https://doi.org/10.1002/PSSA.2210150130","url":null,"abstract":"The phase diagram and crystal structure of vanadium–deuterium alloys have been studied by means of neutron and X-ray diffraction as well as heat capacity measurements. In addition to a disordered solid solution (α-phase), the following three ordered phases have been found at relatively low temperatures, i.e. a β-phase or V2D superstructure (space group Cm or I41/amd) below 130°C, a γ-phase or V4D3 superstructure (Pcc2) below −125°C, and a δ-phase or VD1−x superstructure (Pnnn) below room temperature. \u0000 \u0000 \u0000 \u0000Das Zustandsdiagramm und die Kristallstruktur von Vanadium–Deuteriumlegierungen wurden mit Hilfe von Neutronen- und Rontgen-Beugungsmethoden sowie durch Messung der spezifischen Warme untersucht. Auser der regellosen Mischkristallphase (α), werden die drei folgenden geordneten Phasen bei niedriger Temperatur gefunden: die β-Phase oder V2D-Uberstruktur (Raumgruppe Cm oder I41/amd) unterhalb 130°C, die γ-Phase oder V4D3-Uberstruktur (Pcc2) unterhalb −125°C und die δ-Phase oder VD1−x-Uberstruktur (Pnnn) unterhalb Zimmertemperatur.","PeriodicalId":21586,"journal":{"name":"Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy","volume":"21 1","pages":"89"},"PeriodicalIF":0.0,"publicationDate":"1973-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81241641","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: 70
The Behavior of Silicon and Aluminum in the Nitrofluor Process 硅和铝在硝基氟过程中的行为
Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy Pub Date : 1973-01-01 DOI: 10.2473/shigentosozai1953.89.1030_799
A. Kigoshi, Mitsuo Ohmi
{"title":"The Behavior of Silicon and Aluminum in the Nitrofluor Process","authors":"A. Kigoshi, Mitsuo Ohmi","doi":"10.2473/shigentosozai1953.89.1030_799","DOIUrl":"https://doi.org/10.2473/shigentosozai1953.89.1030_799","url":null,"abstract":"","PeriodicalId":21586,"journal":{"name":"Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy","volume":"124 1","pages":"14-24"},"PeriodicalIF":0.0,"publicationDate":"1973-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77318675","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
On the Heat of Mixing of Liquid Copper Alloys 液态铜合金的混合热研究
Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy Pub Date : 1973-01-01 DOI: 10.2320/JINSTMET1952.37.8_834
S. Takeuchi, O. Uemura, S. Ikeda
{"title":"On the Heat of Mixing of Liquid Copper Alloys","authors":"S. Takeuchi, O. Uemura, S. Ikeda","doi":"10.2320/JINSTMET1952.37.8_834","DOIUrl":"https://doi.org/10.2320/JINSTMET1952.37.8_834","url":null,"abstract":"","PeriodicalId":21586,"journal":{"name":"Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy","volume":"1 1","pages":"41-55"},"PeriodicalIF":0.0,"publicationDate":"1973-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88375103","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: 10
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