International Journal of Inorganic Materials最新文献_第7页

Improvement of optical and luminescent characteristics and radiation hardness of PbWO4 crystals by doping with Y, Sb, and Mo impurities 掺杂Y、Sb和Mo杂质改善PbWO4晶体的光学、发光特性和辐射硬度

International Journal of Inorganic Materials Pub Date : 2001-12-01 DOI: 10.1016/S1466-6049(01)00105-2

S Burachas , A Apanasenko , B Grinyov , V Ryzhikov , K Katrunov , M Starzhinskiy , M Ippolitov , V Manko , G Tamulaitis

引用次数: 15

Mechanism of ionic conduction in oxy and hydroxyapatite structures 氧和羟基磷灰石结构中的离子传导机制

International Journal of Inorganic Materials Pub Date : 2001-11-01 DOI: 10.1016/S1466-6049(01)00054-X

A Bouhaouss , A Laghzizil , A Bensaoud , M Ferhat , G Lorent , J Livage

{"title":"Mechanism of ionic conduction in oxy and hydroxyapatite structures","authors":"A Bouhaouss , A Laghzizil , A Bensaoud , M Ferhat , G Lorent , J Livage","doi":"10.1016/S1466-6049(01)00054-X","DOIUrl":"10.1016/S1466-6049(01)00054-X","url":null,"abstract":"<div>Knowledge of the ionic transport properties of apatites is important in uderstanding their physical and chemical properties. This report reviews and updates results obtained on the alternating current impedance characteristics of synthetic apatites. The possible mechanism of the conduction properties of various oxy and hydroxyapatites are discussed on the basis of the structural data. It is deduced that charge carrying protons are responsible for the observed conductivities in M10(PO4)6(OH)2. The H+ migration between the electoattractive ion (O2−) to give molecular H2O in matrix channels. However, in some vanadium oxyapatites containing lanthanum Ca10−xLax(VO4)6O1+x/2, the ionic conductivities observed are explained by the frequent hopping of oxygen ion along the c axis of the hexagonal matrix. The study of the conductivity relaxation shows structural aspects of these electrolytes.</div>","PeriodicalId":100700,"journal":{"name":"International Journal of Inorganic Materials","volume":"3 7","pages":"Pages 743-747"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1466-6049(01)00054-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75805328","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: 33

Synthesis of nanostructured mesoporous zirconia using CTMABr–ZrOCl2·8H2O systems: a kinetic study of synthesis mechanism ctmbr - zrocl2·8H2O体系合成纳米介孔氧化锆:合成机理的动力学研究

International Journal of Inorganic Materials Pub Date : 2001-11-01 DOI: 10.1016/S1466-6049(01)00084-8

J.L Blin, R Flamant, B.L Su

{"title":"Synthesis of nanostructured mesoporous zirconia using CTMABr–ZrOCl2·8H2O systems: a kinetic study of synthesis mechanism","authors":"J.L Blin, R Flamant, B.L Su","doi":"10.1016/S1466-6049(01)00084-8","DOIUrl":"10.1016/S1466-6049(01)00084-8","url":null,"abstract":"<div>A systematic kinetic study of mesoporous zirconia formation has been performed in order to optimize the synthesis conditions without addition of structure stabilizing agents such as sulfate or phosphate anions. We have investigated in particular the effect of synthesis time and temperature. On the basis of TEM, SEM, XRD and N2 adsorption–desorption results, a synthesis mechanism has been proposed. It is observed that at low temperature or for short durations at higher temperatures, the obtained materials are first supermicroporous, then if hydrothermal treatment is prolonged, a breakdown of the walls separating adjacent pores allows the transformation to mesopores. The obtained materials have a uniform pore size and their surface can reach 300 m2/g. The channel array is, at least part of samples, wormlike. However, if hydrothermal treatment is performed at too high temperature or for too long durations, mesoporous compounds are no longer obtained, but thermodynamically more stable crystalline zirconium oxides with very low specific surface area, namely the tetragonal and monoclinic forms, are the final phases.</div>","PeriodicalId":100700,"journal":{"name":"International Journal of Inorganic Materials","volume":"3 7","pages":"Pages 959-972"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1466-6049(01)00084-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72990425","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: 66

A convenient hydrothermal route to mineral Ag3CuS2 nanorods 热液制备矿物Ag3CuS2纳米棒的便捷途径

International Journal of Inorganic Materials Pub Date : 2001-11-01 DOI: 10.1016/S1466-6049(01)00163-5

J.Q Hu, B Deng, W.X Zhang, K.B Tang, Y.T Qian

引用次数: 24

Effects of rare earth ion substitution for Ca in (Bi,Pb):2223 superconductors 稀土离子取代(Bi,Pb):2223超导体中Ca的影响

International Journal of Inorganic Materials Pub Date : 2001-11-01 DOI: 10.1016/S1466-6049(01)00048-4

G Ilonca , A.V Pop , T.R Yang , I.Gr Deac , C Lung , R Stiufiuc , G Stiufiuc

{"title":"Effects of rare earth ion substitution for Ca in (Bi,Pb):2223 superconductors","authors":"G Ilonca , A.V Pop , T.R Yang , I.Gr Deac , C Lung , R Stiufiuc , G Stiufiuc","doi":"10.1016/S1466-6049(01)00048-4","DOIUrl":"10.1016/S1466-6049(01)00048-4","url":null,"abstract":"<div>The effect of partial replacement of Ca by Y, Er and Lu on the structural transport properties of (Bi1.6Pb0.4)(Sr1.8Ba0.2)(Ca1−xRx)2Cu3Oy superconductors ceramics (0≤x≤0.03) have been investigated. The substitution of Y, Lu and Er at the Ca site induced the decrease of the volume fraction for the 2223 phase and the increase of the 2212 and 2201 phases volume fractions. In the normal state, all the samples are characterized by a linear temperature dependence of electrical resistivity and Hall concentrations. The rate of depression for the critical temperature in x=0.02 samples found to be nearly the same for all of these substitutions. The nature of TC suppression may be attributed to the increase of oxygen content in Bi2O2 double layers with increasing Y, Lu and Er concentrations. The sample shows a linear dependence of intergranular temperature as a function of AC field amplitude, which is in agreement with the Müller critical state model.</div>","PeriodicalId":100700,"journal":{"name":"International Journal of Inorganic Materials","volume":"3 7","pages":"Pages 769-772"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1466-6049(01)00048-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86026615","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: 16

Comparison between excimer laser irradiation effects in FeCr-based metallic glass and stainless steel 准分子激光辐照在铁铁基金属玻璃和不锈钢中的效果比较

International Journal of Inorganic Materials Pub Date : 2001-11-01 DOI: 10.1016/S1466-6049(01)00175-1

Monica Sorescu

{"title":"Comparison between excimer laser irradiation effects in FeCr-based metallic glass and stainless steel","authors":"Monica Sorescu","doi":"10.1016/S1466-6049(01)00175-1","DOIUrl":"10.1016/S1466-6049(01)00175-1","url":null,"abstract":"<div>Pulsed excimer laser (248 nm, 8 ns) irradiation of Fe77Cr2B16Si5 metallic glass produces an out-of-plane reorientation of magnetic moment directions as well as changes in the resonant area of the Mössbauer spectra which depend on the irradiation time. Scanning electron microscopy (SEM) determinations linked these changes to the occurrence of molten zones subsequently resolidified. For comparison, Mössbauer spectra of the Fe/Cr18/Ni8/Ti magnetic steel showed additional features in the probability distribution of the hyperfine magnetic field, while the distribution of the Fe/Cr18/Ni8/Mo3 nonmagnetic steel remained unchanged after laser processing. For both steels, the distribution area in the Mössbauer spectra was found to decrease steadily as a function of irradiation time and the magnetic hyperfine fields showed maxima after 10 s/spot. SEM/EDX examination of the laser irradiated areas demonstrated that Ti atoms are displaced from these zones and suggest atomic rearrangements related to the features observed in the distributions of probability.</div>","PeriodicalId":100700,"journal":{"name":"International Journal of Inorganic Materials","volume":"3 7","pages":"Pages 813-818"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1466-6049(01)00175-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77259865","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: 2

Synthesis and characterization of a MoO3–pyrrolidinedithiocarbamate hybrid moo3 -吡咯烷二硫代氨基甲酸酯杂化物的合成与表征

International Journal of Inorganic Materials Pub Date : 2001-11-01 DOI: 10.1016/S1466-6049(01)00082-4

R.F de Farias

引用次数: 12

Electrical transport properties of erbium substituted Ni–Zn ferrites 铒取代镍锌铁氧体的电输运性质

International Journal of Inorganic Materials Pub Date : 2001-11-01 DOI: 10.1016/S1466-6049(01)00194-5

K Vijaya Kumar, D Ravinder

引用次数: 22

Application of inorganic polymeric materials 无机高分子材料的应用

International Journal of Inorganic Materials Pub Date : 2001-11-01 DOI: 10.1016/S1466-6049(01)00162-3

Azam Rahimi, Parvin Shokrolahi

引用次数: 36

Melanin-like units concentration effects in melanin-like/vanadium pentoxide hybrid compounds 类黑色素单位浓度对类黑色素/五氧化二钒杂化化合物的影响

International Journal of Inorganic Materials Pub Date : 2001-11-01 DOI: 10.1016/S1466-6049(01)00184-2

E. Arashiro , E.C. Zampronio , C.A. Brunello , T.A.F. Lassali , H.P. Oliveira , C.F.O. Graeff

{"title":"Melanin-like units concentration effects in melanin-like/vanadium pentoxide hybrid compounds","authors":"E. Arashiro , E.C. Zampronio , C.A. Brunello , T.A.F. Lassali , H.P. Oliveira , C.F.O. Graeff","doi":"10.1016/S1466-6049(01)00184-2","DOIUrl":"10.1016/S1466-6049(01)00184-2","url":null,"abstract":"<div>An intercalated material has been prepared consisting of a regular alternation of organic/inorganic layers. The films were obtained by reacting 3,4-dihydroxy-phenylalanine (dl-DOPA) with varying concentrations in a solution with freshly prepared HVO3, which suffered a oxidative polymerization/intercalation ‘in situ’ process, forming a green suspension, in which after de-hydration at room temperature produces a nanocomposite with a dark blue metallic color. Films (C8H9NO2)xV2O5·nH2O were characterized using FT–IR, ESR, powder X-ray diffraction, conductivity, and cyclic voltammetry. The X-ray diffractograms indicate that the lamellar structure of the V2O5 is preserved for low concentrations of melanin-like units (x<0.02), but the inter-planar space increases from 1.2 nm to ca. 1.5 nm. The FT–IR and ESR spectra confirm that the V2O5 structure is preserved, however the presence of melanin-like units induces the reduction of V(V) ions to V(IV) ions. The melanin insertion is observed to increase the stability and reproducibility of the electrochemical insertion/de-insertion of Li+. The incorporation of melanin-like structures increases the conductivity, followed by a decrease in its temperature activation energy.</div>","PeriodicalId":100700,"journal":{"name":"International Journal of Inorganic Materials","volume":"3 7","pages":"Pages 727-731"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1466-6049(01)00184-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79480930","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: 4