OTHERS_CITABLE رشد براراستی لایه های GaAs/AlxGa1-xAs و بررسی مشخصات آنها http://ijcm.ir/article-1-917-fa.pdf 2017-07-10 3 14 رشد برآراستی فاز مایع ابر سرد منحنی فاز زیر لایه Characterization and Fabrication of Multilayers of A1xGal_xAs/GaAs by Epitaxy Five layers of GaAs:Te(n=2x 1018 cm' Alo.4GaQ.6As: Sn(n=5xWI6 em,3}. GaAs, Alo .• GaQ.6As: Ge(p=3xW17 em-3), GaM: GC(p= IXlO18cm 3) were grown by supercooled Liquid Phase Epilaxy on n-GaAs(IOO) substrate. The cooling rate of the furnace was SCI up With U. I"C/min al T=860°C. The firSI layer was grown at T=840°C and Ihe la sl one at T=827°C. The thi ckness were varied between 0.1 10 8,um by controlling the supercooling IcmperalUre and growth time. Quality and quantilY of epitaxial layers were examined by TEM, SEM, PIXE and x-ray, http://ijcm.ir/article-1-917-en.pdf 2017-07-10 3 14 Liqlll'd Phase Epitaxy supercooled Liquid substrate 1 AUTHOR 2 AUTHOR 3 AUTHOR 4 AUTHOR
OTHERS_CITABLE تحلیل کامپیوتری داده های پراش سنجی و طیف سنجی پرتو x دستگاه های پرتو x امروزی که در تحقیقات و مطالعات پژوهشی بکار می روند، مجهز به کامپیوتر هستند. برای مدرنیزه کرده دستگاه های موجود که مجهز به چنین کامپیوترهایی نیستند و نیز جهت دستیابی سریع به داده های ... http://ijcm.ir/article-1-918-fa.pdf 2017-07-10 15 22 داده خام بسامد قله ها برازش خم Computer Analysis of XRF and XRD Data Modern X-ray systems used in research are equipped with computers. To modernize the ava ilable systems which are not attached to such computers and in order to have a rapid access to the data extracted from the system. furnishing such systems seems necessary. In this paper a research conducted at the university ofTabriz to arrive at the above mentioned aims and to have an access to tbe results obtained from the X-ray systems, the process of computer analysis of XRF and XRD data are presented. http://ijcm.ir/article-1-918-en.pdf 2017-07-10 15 22 1 AUTHOR 2 AUTHOR 3 AUTHOR
OTHERS_CITABLE تهیه و مطالعه ساختار مولکولی کمپلکس [Cd(NO3)2(Ueea)4] از اثر اوره بر محلول اشباع کادمیوم نیترات در دمای oC60، کمپلکسی با فرمول Cd(NO3)2(Ueea)4] به دست آمد. ساختار مولکولی این کمپلکس به روش پراش سنجی تک بلور پرتو ایکس تعیین شده است... http://ijcm.ir/article-1-919-fa.pdf 2017-07-10 23 30 تهیه ساختار مولکولی کادمیوم نیترات اوره Synthesis and Molecular Structure of [Cd (NO,l> (Urea).) [Cd(NO)z(u rea)4J was synthesized by reaction of cadmium nitrate and urea under certain conditions. The dimensions of used crystal were O.47xO.40x0.58 mm. The molecular structure has been determined by SHELX-86 program. This complex crystalizes in monoclinic space group P2}/a with two molecules per uni. cell. Lattice parameters of this compound are: a~7.6060 A b~12.7740 A c~9.0370 A P~ll'.07" After last least - square cycle, the final Rand Rw values are 0.0556 and 0.0685 , respectivley. According to IR and molecular structure studies, urea molecule is coordinated through oxygen. http://ijcm.ir/article-1-919-en.pdf 2017-07-10 23 30 Synthesis Molecular Struclure Cadmium NiJrate Urea 1 AUTHOR 2 AUTHOR
OTHERS_CITABLE رشد تک بلور پیزوالکتریک KDP بلورهای پیزوالکتریک افزون بر اهمیت آنها در پژوهش در مسائل نظامی و صنعتی نیز کاربردهای فراوانی دارند و این امر باعث شده است تا توجه خاصی به این دسته از بلورها معطوف شود. از نظر صنعتی ساخت تک بلور با محدودیتهای خاص تکنیکی... http://ijcm.ir/article-1-920-fa.pdf 2017-07-10 31 36 رشد بلور بلور kdp پیزوالکتریک The KDP Single Crystal Growth Studies The piezoelectric crystals conven mechanical energy inlo clcclrical energy and vice versa. This propeny has many applications in science and technology. In this paper we reporl the growth of KDP single crystal OUI of a super-saturated KDP liquid by controling the temperature and the pH. We studied the effect of the variation of the pH and temperature on the KDP single crystal. We found that the best pH range is 4.5 In 5.2, and also that the mOSl appropriate temperature range is 25°C to 30"C. http://ijcm.ir/article-1-920-en.pdf 2017-07-10 31 36 /CDP Single Crystal Piezoelectric Crystal Crystal Growth 1 AUTHOR 2 AUTHOR 3 AUTHOR
OTHERS_CITABLE بررسی فازهای ترکیبی در فریت آهن، تهیه شده از احیا خشک هماتیت نامغناطیسی، با استفاده از پراش سنجی و فلوئورسانی پرتوX بریا آگاهی از تشکیل فاز اسپینل، Fe3O4 در فریت اهن که به روش احیا خشک هماتیت نامغناطیسی تهیه شده بود نمونه هایی از آن را با استفاده از روش پراش سنجی پرتو X مورد تحلیل کیفی و کمی قرار دادیم.... http://ijcm.ir/article-1-921-fa.pdf 2017-07-10 37 44 XRD, XRF Study of Magnetic Phases of Fe· Ferrite Pruduced by Dry Reduction of Hematite produced iron - ferrtie(Fc304) by methods of dry reduction of hematite(a-Fez03) are investigated on magnetic phases and properties with X-ray diffraclomclcry and also measurements of magnelisalion. The resulls show that the percentage and kind of reductive materials, the heating temperalUre and time have serious effects in production of Fe,O,. http://ijcm.ir/article-1-921-en.pdf 2017-07-10 37 44 Magnetic Phase Fe·Ferrite Reduction of Hemat le 1 AUTHOR 2 AUTHOR
OTHERS_CITABLE سنتز ژئولیت فوژاسیت و مطالعه بلورهای ان سنتز زئولیت با اسختار فوژاسیت را می توان در زمانی کوتاه، با ساختن محلول هسته زای تازه و آمیختن ان با ژل آلومینوسیلیکات در شرایط آبی -گرمایی در اتوکلاو فولادی با لوله داخلی تفلوم انجام داد.... http://ijcm.ir/article-1-922-fa.pdf 2017-07-10 45 56 فوژاسیت.محلول هسته زا. سیلیکای کلوئیدی زمان رشد Synthesis or faujasite zeolite and studing of its microcrystals Hyd rot hermal synthes is of faujasite type zeolite in a short crysta llizat ion period could be performed by preparing a fresh aqueous nucleation solution mixed with an aluminosilicalc gel into a teflon tube placed in thc stainless-steel microautoclave. Effects of source of s ilica, sodium silicate, and colloidal silica and also aging of nucleation solution were examined 10 prepare a hig hly crys talline and pure fauja s ite. in all experiments composition of the final gel was 3Na20,1 AI20 1,lOSi02, 160H20. Mcthods of X-ray Diffraction, Scanning Electron Microscopy. Energy Dispe rsive X-ray spectrometry associated with SEM, infrared spectroscopy and Thermogravimetric Analysis were uesd to study the crys tallinity and re lat ed properties. UV-VIS spectrosco py were used to study the nucleation so lution . Ultra-fine and pure clys tals of fauja s ite were obtained from a nucleation so lution prepared from AI, NaOH and colloidal silica. Average crystal size was l,um and calculated unil celJ formula was Na491(AIOZ)49(Si02)l41j.255H20 Solid phase mate rials precipitated from the aqueous nucleation solution arter seven days, exami ned by X-ray difrreact ion showed btoaded peaks of faujasite. This supports the hypot hesis that crystallization may originated form liquid phase. http://ijcm.ir/article-1-922-en.pdf 2017-07-10 45 56 Faujasite Nucleation solurion Colloidal silica Ageing 1 AUTHOR 2 AUTHOR 3 AUTHOR
OTHERS_CITABLE خزش به سمت بال در رشد تک بلور از محلول ابر اشباع و راه پیشگیری آن استفده از تک بلورها به عهد مصریان باستان بر می گردد. رشد تک بلورها از اویل قرن نوزدهم آغاز و بیشترین پیشرفت ان از سالهای 1940 به بعد بوده است... http://ijcm.ir/article-1-923-fa.pdf 2017-07-10 57 64 رشد تک بلور خزش به سمت بالا پارامترهای موثر به خزش Creeping up in Growth of Crystal from Solution Single crys tals have been grown rrom ancient Egypt. Crys tal growth Slall ... u ... I •• ~ • • . 1 " - •• v •• , 1940 until now. Four melt.odS have been used to prepare single crys tal s: gr~-rr-onrsOlu tiOn, melt, vapour, and solid. Every metho~its own advantage, disadva nlagea nd problems. One of the problems in growth from solution is creeping up. Creeping up is undesirable growth or thin layer on the wall of crystal growth bath. Sometimes this layer grows very rapid and so fills the bath, and prevents growth . In this paper, these subjects are considered l. Why does creeping up occure? 2. What parameter affect on it? 3. What in the best way ror its prevention? Experi ments show that creeping up is arrected by wetting ang le between solution a nd bath wall, viscosity of solution, agitation, additives, and shape of bath. http://ijcm.ir/article-1-923-en.pdf 2017-07-10 57 64 Crystal Growth ero rom Solution Cruping up 1 AUTHOR
OTHERS_CITABLE هونتیت در شرق ایارن (خاستگاه و نحوه تشکیل) کانی هونیتیت با فرمول CaMg3(CO3)4 یک ماده کربناته طبیعی لوزی رخ با ترکیب حد واسط بین دولومیت (CaMg(CO3)4)  و منیزیت (MgCo3( است... http://ijcm.ir/article-1-924-fa.pdf 2017-07-10 65 70 HUNTITE IN EAST OF IRAN. (Occurrence & Origin) Huntite mineral with formula CaMg3(C03}4 is a natural carbonatic material with rhombohedral system that its composition is between dolomite (CaMg(C03h) and magnesite. For the first time Huntite was found in American Nevada province, then in other places i,e. Poland, Hungary, France, Australia, Iran and Greece. According to thermOdynamic, Huntite forms in condition of low pressure and tcmpreature in the surface or near surface area. Investigation in Iran shows the existence ofHuntite mineral within weathered ultramafic rocks. At outer pan of eastern Iran, a great bulk of this rocks in ophiOlitic zone is origineted. In some of this area outcrop of magnesite is in adjacent with Huntite. http://ijcm.ir/article-1-924-en.pdf 2017-07-10 65 70 Huntite Ophiolite serpentinite 1 AUTHOR
OTHERS_CITABLE مطالعه و بررسی معدن میکای قره باغ و ارتباط کانی سازی آن با سنگهای نفوذی و دگرگونی منطقه مطالعات میکروسکوپی و XRD نشان می دهند که اصولا میکای معدن قره باغ از نوع فلوگوپیت است، و در بخش شرقی معدن موسکویت به مقدار کمتر مشاهده می شود... http://ijcm.ir/article-1-925-fa.pdf 2017-07-10 71 78 فلوگوپیت اپاتیت گرانیت ها غیرکوهزایی نوع A هضم سنگهای دگرگونی مراحل پنیماتولیکتی تا هیدروترمال Mineralogical study of Gharebagh mica mine and relationship between mineralization and plutonic, metamorphic host rocks. Microscopic and XRD investigations indicate that the main mica is phlogopi!e. There are also a small amounl of Muscovi!e in Ihe eas! pan. Trend of mica layers is NE-SW. Host rocks arc Gneiss, mi::.;!schist S, granite and gabbro. Minerals assemblage of this mine is phlogopitc, apatite and calcite. Chemical and microscopical in vestiga tions of granite indicate that they are nonorogen alkaligranitc type A The major minerals are potass ic feldspars and albite (with mi croperthite texture) and quartz (with micrograph ice tex ture). Garnel and calcite are minor minerals. Phogopite, Apatite and calcite vein is resulted in pneumatoHte to hydrothermal phase from a granitic melt with high Mg, K, Ca and P. http://ijcm.ir/article-1-925-en.pdf 2017-07-10 71 78 Phlogopil e Apatite Nonorogeny granite type A A ssimilation pneumatolite to hydro/hemlal phase. 1 AUTHOR 2 AUTHOR
OTHERS_CITABLE روش جدید رقیق سازی دوگانه برای تحلیل کمی فازها با پراش پرتو ایکس بدون ترسیم منحنیهای همسنجی روش جدید رقیق سازی دوگانه در سال 1988 میلادی (1367 شمسی) توسط احمد منشی و پیتر فرانسیس مسر ابداع و یکسال بعد نتیجه آن به صورت مقاله ای انتشار یافت... http://ijcm.ir/article-1-926-fa.pdf 2017-07-10 79 87 The New Method or Double Dilution For Quantitative X-ray Diffraction Phase Ana lysis Without Calibration Curves The new method of double dil ution can be used to a nalyse quantitatively all the phases of a multiphase system wit hout the need to construct calibration curves, and with as few as 2 or 3 mixtures prepa red for X-ray diffraction. A specific weight of the powdered specimen which is to be analysed, is mixed with a fixed proportion of internal standard. The standard can be any crysta ll ine compou nd with a prefe rably symmetrical StruclUre, not present in the original specimen. The other part to be mixed is a combi nation of finely ground pure phases or materials of known purity. Area under the diffracted peaks or integra ted inte nsi ty h measured. At least twO X-ray samples of known and different proportions shou ld be employed. Intcnsily ratiO, Y axis, is plotted against weight ratio, X axis, so that a linea r plol for combina tion of 2 peaks from each phase and standard is plaited. Required phase is read from the in tercept of the abscfssu. Mathematics of lilt:: m4!thod Is ctlscussc<1 with a n example of determining alumina, mullite. q uartz a nd silicon in a ceramic test piece containing glassy phase http://ijcm.ir/article-1-926-en.pdf 2017-07-10 79 87 Double Diluf iofl Multiphase System Calibration Curves. 1 AUTHOR