Log in

Relevant bibliographies by topics / Barium / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Barium.

Dissertations / Theses on the topic 'Barium'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Barium.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Zhong, Zhimin. "Combustion syntheses and characterization of Barium Titanate, Barium Tetratitanate and Lead substituted Barium Tetratitanate /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487861396027028.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Rai, Maha. "Molecular dynamics modelling of barium silicate and barium fluorozirconate glasses." Thesis, University of Kent, 2018. https://kar.kent.ac.uk/66702/.

Full text

Abstract:

Advancement in science and technology has profoundly depended on new types of glass innovation. The glasses that were studied in this project are binary barium silicate glasses, binary barium fluorozirconate glasses, ZBLAN glasses and 〖Eu〗^(3+) doped ZBLAN glass (the ZBLAN glasses are based on binary barium fluorozirconate glass). The high atomic number of barium in the barium silicate glasses provides high mass and high electron density providing its applications for heat and X-ray shielding. The phenomena such as phase separation in the barium silicate glass will affect its properties of dur

APA, Harvard, Vancouver, ISO, and other styles

3

Kinsey-Nielsen, Susan Mary. "HIGH-RESOLUTION LASER SPECTROSCOPY OF BARIUM-MONOHYDROXIDE AND BARIUM-MONODEUTEROXIDE." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/292080.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Kirby, Nigel Matthew. "Barium zirconate ceramics for melt processing of barium cuprate superconductors." Thesis, Curtin University, 2003. http://hdl.handle.net/20.500.11937/1364.

Full text

Abstract:

The widespread use of high temperature superconductors through improved understanding of their underlying physics is in part dependent on the synthesis of large, high quality single crystals for physical research. Crucible corrosion is an important factor hindering the routine synthesis of large, high purity rare-earth barium cuprate superconductor single crystals. Molten BaCuO2-CuO fluxes required for the growth of such crystals are highly corrosive to substrate materials, and corrosion products may lead to chemical contamination of crystals and other practical difficulties. BaZrO3 is known t

APA, Harvard, Vancouver, ISO, and other styles

5

Kirby, Nigel Matthew. "Barium zirconate ceramics for melt processing of barium cuprate superconductors." Curtin University of Technology, Department of Applied Physics, 2003. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=16216.

Full text

Abstract:

The widespread use of high temperature superconductors through improved understanding of their underlying physics is in part dependent on the synthesis of large, high quality single crystals for physical research. Crucible corrosion is an important factor hindering the routine synthesis of large, high purity rare-earth barium cuprate superconductor single crystals. Molten BaCuO2-CuO fluxes required for the growth of such crystals are highly corrosive to substrate materials, and corrosion products may lead to chemical contamination of crystals and other practical difficulties. BaZrO3 is known t

APA, Harvard, Vancouver, ISO, and other styles

6

Lehnen, Peer. "Relaxoreigenschaften von Strontium-Barium-Niobat - Relaxor Properties of Strontium-Barium-Niobate." Gerhard-Mercator-Universitaet Duisburg, 2001. http://www.ub.uni-duisburg.de/ETD-db/theses/available/duett-12132001-102821/.

Full text

Abstract:

In the present thesis the relaxor properties of the tungsten-bronze ferroelectric material strontium-barium niobate Sr<sub>1-w</sub>Ba<sub>w</sub>Nb<sub>2</sub>O<sub>6 </sub>(SBN) are investigated. SBN is a very good experimental realization of the three-dimensional random-field Ising model (3d <i>RFIM</i>). The quenched random fields (<i>RF</i>) originate from charge disorder and can be enhanced by doping with Ce<sup>3+</sup>. They are responsible for the formation of polar nanoclusters in the paraelectric phase. In order to study the critical behavior of SBN, linear birefringence (<i>LB</i>)

APA, Harvard, Vancouver, ISO, and other styles

7

Maie, Hiroki. "Synthesis and dielectric properties of nanocrystalline barium titanate and silver/barium titanate particles." Connect to this title online, 2008. http://etd.lib.clemson.edu/documents/1211387100/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Nabasenja, Caroline. "Radiation doses for barium meals and barium enemas in the Western Cape South Africa." Thesis, Cape Peninsula University of Technology, 2009. http://hdl.handle.net/20.500.11838/1560.

Full text

Abstract:

Thesis submitted in fulfilment of the requirements for the award of the degree of Master of Technology Radiography (Diagnostic) in the Faculty of Health and Wellness Sciences at the Cape Peninsula University of Technology 2009<br>Since their discovery in 1895, the use of x-rays is continuously evolving in medicine making the diagnosis of injuries and diseases more practicable. It is therefore not surprising that x-rays contribute 90% of the radiation dose to the population from manmade sources (DWP, 1992). Moreover, these radiation doses are associated with both fatal and non-fatal cancer risk

APA, Harvard, Vancouver, ISO, and other styles

9

Jakubek, Zygmunt J. (Zygmunt Jerzy). "Rydberg spectroscopy of barium monofluoride." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/32154.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Yang, Yaodong. "Barium Titanate-Based Magnetoelectric Nanocomposites." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/38666.

Full text

Abstract:

Barium Titanate (BaTiO3 or BTO) has attracted an ever increasing research interest because of its wide range of potential applications. Nano-sized or nanostructured BTO has found applications in new, useful smart devices, such as sensors and piezoelectric devices. Not only limited to one material, multi-layers or multi-phases can lead to multifunctional applications; for example, nanocomposites can be fabricated with ferrite or metal phase with BTO. In this study, I synthesized various BTO-ferrites, ranging from nanoparticles, nanowires to thin films. BTO-ferrite coaxial nanotubes, BTO-ferrite

APA, Harvard, Vancouver, ISO, and other styles

11

Gross, Timothy M. "[Beta]-barium borate thin film formation on silicon through metal organic decomposition of two novel precursors, barium dimesitylborinate and barium (18-crown-6) cyclotriboroxane /." Online version of thesis, 2004. http://hdl.handle.net/1850/11802.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Janasi, Suzilene Real [UNESP]. "Ferrita de bário: preparação de fases dopadas com cobalto, titânio e estanho." Universidade Estadual Paulista (UNESP), 1997. http://hdl.handle.net/11449/102592.

Full text

Abstract:

Made available in DSpace on 2014-06-11T19:32:11Z (GMT). No. of bitstreams: 0 Previous issue date: 1997Bitstream added on 2014-06-13T20:27:17Z : No. of bitstreams: 1 janasi_sr_dr_araiq.pdf: 2566763 bytes, checksum: e10173459cbf62287b0478669d7c6ed0 (MD5)<br>A substituição parcial de íons Fe3+ por pares de íons (Co2+-Ti4+ ou Co2+-Sn4+) na ferrita de bário hexagonal (BaFe12O19) leva a uma substancial diminuição no campo coercitivo (Hc) com uma pequena mudança na magnetização de saturação (Ms), permitindo seu uso em gravação magnética e magneto-óptica de alta densidade. Os diferentes métodos de p

APA, Harvard, Vancouver, ISO, and other styles

13

Lee, Chung-Kook. "Crystallization of Nano-sized barium ferrite." Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/19920.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Cannell, David Stuart. "The electric strength of barium titanate." Thesis, University of Leeds, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.237676.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Quadros, da Cunha Feteira AntoÌnio Manuel AndreÌ. "Characterisation of barium titanate based ceramics." Thesis, University of Sheffield, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.407525.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Abdulla, Sarah Ahmed Eltayed. "Barium sulphate : problems, solutions and applications." Thesis, University of Surrey, 2010. http://epubs.surrey.ac.uk/848627/.

Full text

Abstract:

The main aim of this work is to synthesise barium sulphate (BaS04) that are tiny in size (nanoparticles). BaS04 scaling is a known problem in the context of offshore oil recovery. Different methods of scale control have been suggested in the literature, none has solved the BaS04 scaling problem dramatically. In this work several methods were assessed, but only one of them seemed to work well. The methods studied were: 1) Formation of colloidal BaS04 in an aqueous alcohol medium using BaCh and Na2S04 as precursors. The precursors were mixed rapidly forming rhombohedral BaS04 and by tubular reac

APA, Harvard, Vancouver, ISO, and other styles

17

Johnston, Diane E. "Characterisation of lanthanum-doped barium titanate." Thesis, University of Aberdeen, 1993. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU554634.

Full text

Abstract:

One significant application of donor doped barium titanate (BaTiO3) is in the manufacture of Positive Temperature Coefficient of Resistance (PTCR) thermistors. Combined synthesis, phase diagram and electrical studies were undertaken on donor doped barium titanate with a view to understanding the factors responsible for PTCR phenomena. A range of materials, both commercial PTCR devices and in-house lanthanum-doped barium titanate samples, have been studied. All three commercial PTCR samples measured were found to be electrically inhomogeneous with two PTCR-exhibiting regions and a conductive gr

APA, Harvard, Vancouver, ISO, and other styles

18

Smetana, Volodymyr. "Subnitride im System Alkalimetall-Barium-Stickstoff." [S.l. : s.n.], 2008. http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-36312.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

De, Palatis Michael V. "Production of cold barium monohalide ions." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50251.

Full text

Abstract:

Ion traps are an incredibly versatile tool which have many applications throughout the physical sciences, including such diverse topics as mass spectrometry, precision frequency metrology, tests of fundamental physics, and quantum computing. In this thesis, experiments are presented which involve trapping and measuring properties of Th³⁺. Th³⁺ ions are of unique interest in part because they are a promising platform for studying an unusually low-lying nuclear transition in the 229Th nucleus which could eventually be used as an exceptional optical clock. Here, experiments to measure electronic

APA, Harvard, Vancouver, ISO, and other styles

20

Thorner, Gentien. "Nanostructures de titanate de Baryum : modélisation,simulations numériques et étude expérimentale." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLC093/document.

Full text

Abstract:

Des simulations numériques conduites sur un ferroélectrique, le Titanate de Baryum, permettent d'extraire les températures où se produisent les transitions pour chacune des composantes et elles utilisent le plus souvent des conditions limites périodiques. Cependant, il est possible de modifier la simulation de manière à rendre compte d'une particule isolée, et les conditions limites électriques de type court-circuit ou bien circuit ouvert affectent alors le résultat. Réduire la taille accorde encore davantage d'importance à de tels effets de surface par rapport aux effets de volume. Expériment

APA, Harvard, Vancouver, ISO, and other styles

21

Kaur, Mehar. "The Terrestrial Biogeochemical Cycle of barium: A proposed study to examine barium flux in Mojave Desert dust." Scholarship @ Claremont, 2013. http://scholarship.claremont.edu/scripps_theses/150.

Full text

Abstract:

Barium is a relatively abundant element in the crustal environments, Ba quantities can range from anywhere between 200ppm to 900ppm. Most common forms of Ba-minerals found in the environment are barite (BaSO4), witherite (BaCO3) and hollandite (Ba2Mn8O16). Ba is a useful element; it is used in various industries as a component in drilling fluids, in medical research and in manufacturing of various substances such as glass, ceramics, printing paper etc. However high quantity of Ba can be potentially toxic for the human body and can impair plant growth. It is therefore, important to review the t

APA, Harvard, Vancouver, ISO, and other styles

22

Niggli, Stefan. "Klassische und laser-spektroskopische Untersuchungen an Barium /." [S.l.] : [s.n.], 1987. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=8416.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Wu, Wenzhong. "Low Temperature Sintering Semiconductive Barium Strontium Titanate." FIU Digital Commons, 2007. http://digitalcommons.fiu.edu/etd/76.

Full text

Abstract:

Low temperature sintering has become a very important research area in ceramics processing and sintering as a promising process to obtain grain size below 100nm. For electronic ceramics, low temperature sintering is particularly difficult, because not only the required microstructure but also the desired electronic properties should be obtained. In this dissertation, the effect of liquid sintering aids and particle size (micrometer and nanometer) on sintering temperature and Positive Temperature Coefficient Resistivity (PTCR) property are investigated for Ba1-xSrxTiO3 (BST) doped with 0.2-0.3m

APA, Harvard, Vancouver, ISO, and other styles

24

Gallagher, Andrew James. "Modelling barium isotopes in metal-poor stars." Thesis, University of Hertfordshire, 2012. http://hdl.handle.net/2299/9224.

Full text

Abstract:

The principal theory concerning the origin of the elements heavier than the Fe-peak, such as Ba, strongly suggest that for old, metal-poor environments, the rapid (r-) process is the most likely path taken in their synthesis, while the slow (s-) process becomes more substantial in younger, more metal-rich stellar populations. In this work I test this theory by evaluating the isotope ratios of Ba. It is understood that Ba consists of seven stable isotopes, five of which are synthesised by the two neutron-capture processes. The two odd isotopes, 135,137Ba, as well as 138Ba are synthesised via bo

APA, Harvard, Vancouver, ISO, and other styles

25

Wegmann, Markus Rolf. "Microextrusion of barium titanate for PTCR applications." Thesis, University of Strathclyde, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248863.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Cui, Yongfei. "Ferroelectric barium titanate for semiconductor photocatalytic application." Thesis, Queen Mary, University of London, 2015. http://qmro.qmul.ac.uk/xmlui/handle/123456789/9530.

Full text

Abstract:

Semiconductor photocatalysis has received extensive attention due to its wide applications in water and indoor air purification, solar fuel production, etc. Charge carrier separation is a crucial step in semiconductor photocatalysis and influences the overall efficiency. It has been demonstrated that internal depolarisiation field of ferroelectric materials can drive spatial separation of charge carriers, which results in spatial separation of reduction and oxidation reactions, and improved charge carrier separation. In this thesis, ferroelectric barium titanate was chosen and its photocatalyt

APA, Harvard, Vancouver, ISO, and other styles

27

Lea, David Wallace. "Foraminiferal and coralline barium as paleoceanographic tracers." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/54332.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Jette, Bruce Donald. "Feasibility of electrodeposition of yttrium and barium." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/79452.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Fallon, Joseph John. "Multiscale theory and simulation of barium titanate." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/28089.

Full text

Abstract:

Although barium titanate is one of the most widely studied ferroelectric materials, questions about the nature of its phase transition remain. There are two competing models for this transition (displacive and order-disorder) and experiments detect signs of both types of transition. To study this issue computationally requires the simulation of large, disordered systems on the atomic scale. In this PhD I have developed a new classical force field for BaTiO3 which, in essence, is an ionic model. The free parameters within this force field were fitted to data generated from density-functional th

APA, Harvard, Vancouver, ISO, and other styles

30

Fathi, Ariya Reza. "Barium Solidification/Stabilization of Legacy Fly Ash." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1523014706886586.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Fung, Sing Chor. "Conductivity fluctuations in yttrium barium cooper oxides." HKBU Institutional Repository, 1994. http://repository.hkbu.edu.hk/etd_ra/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Rauch, William L. "Fabrication and properties of barium cerate based electrolytes." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/19638.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Yobregat, Elsa. "Les isotopes du strontium et du baryum dans le Système Solaire précoce." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEN002/document.

Full text

Abstract:

Des anomalies nucléosynthétiques ont été observées dans des météorites pour plusieurs éléments. L’ampleur de ces anomalies ainsi que leur répartition entre les objets du système solaire renseigne sur le degré d’hétérogénéité de la nébuleuse solaire. L’étude des phases porteuses de ces anomalies procure des informations sur les processus à l’origine de cette hétérogénéité. Les datations par radiochronomètres de courte période reposent sur la répartition hétérogène des éléments père et fils. L’utilisation de ces outils nécessite donc l’étude parallèle des variations nucléosynthétiques de ces élé

APA, Harvard, Vancouver, ISO, and other styles

34

SUBRAMANIAM, SRINIVAS. "EFFECTS OF PROCESSING ON PTCR BARIUM TITANATE SYSTEMS WITH BARIUM OXIDE AND TITANIUM OXIDE ADDITIONS IN THE NEAR STOICHIOMETRIC REGION." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1047057044.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Janowski, Mary Patricia. "An investigation of the high barium oxide portion of the BaO-Sc₂O₃-Al₂O₃ ternary phase diagram." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/19414.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Aydogan, Eda. "Processing And Characterization Of Textured Barium Ferrite Ceramics." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614465/index.pdf.

Full text

Abstract:

Technological advances results in the fact that quite a large number of electronic equipment interacts with its environment leading to the malfunction of the devices. This brings about the necessity of using proper electromagnetic (EM) wave absorbers/shields to avoid such interactions. In order to absorb EM waves in a large frequency band from several MHz to GHz, barium hexaferrite (BaHF) ceramics which are produced as textured ceramics as well as in multilayered form can be used. Textured ceramics are processed by tape casting using templated grain growth (TGG) phenomenon. In order to obtain

APA, Harvard, Vancouver, ISO, and other styles

37

Chen, Michael H. "Magnetic phase transitions in praseodymium-barium doped manganites." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2007. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Lin, Wen-yi. "Barium polytitanate dielectric resonators for microwave wireless communication." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/19666.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Barry, Nicholas Peter. "Investigations of photorefractive barium titanate at high intensity." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362353.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Wilcock, Jennifer Ruth. "Biological minerals formed from strontium and barium sulphates." Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238199.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Ridgway, Leah M. "Magneto-dieletric properties of bismuth substituted barium hexaferrite." Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/12183/.

Full text

Abstract:

The work contained within this thesis seeks to address the dielectric and magnetic properties of bismuth substituted barium hexaferrite (composition BaBixFe12-xO19 where x = 0.0, 0.2, 0.5, 0.8, 1.0 and 1.5) across a broad frequency spectrum. This material is potentially of interest in antenna applications (specifically a dielectric resonator antenna) where high permittivity and permeability materials can be exploited to physically minimize the size of antenna devices. At low frequencies (20Hz - 3MHz) LCR meter based analysis was used to investigate the capacitance and inductance of the materia

APA, Harvard, Vancouver, ISO, and other styles

42

Goulding, Philip S. "Formation damage arising from barium sulphate scale precipitation." Thesis, Heriot-Watt University, 1987. http://hdl.handle.net/10399/964.

Full text

Abstract:

Formation of scale in oilfield pipework has long been a problem. It is also likely that scale might form in the near well-bore region of the reservoir. This thesis examines the simulation of the formation damage possible due to scale, supported by experiments involving mixing brines in sandstone cores. Simulation was performed using a network model to represent the sandstone. The model was "damaged" using precipitation theory and observations on the damage caused to experimental cores. Experiments were performed, using quarried sandstone, to provide data for tuning and matching the model. The

APA, Harvard, Vancouver, ISO, and other styles

43

Alipanah, Razieh. "Structure development in sol-gel derived barium hexaferrites." Thesis, University of Warwick, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.402998.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Liu, Yang. "Synthesis and Characterisation of Ho-doped Barium Titanate." Thesis, University of Sheffield, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.521852.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Mavredaki, Eleftheria. "Barium sulphate formation kinetics and inhibition at surfaces." Thesis, University of Leeds, 2009. http://etheses.whiterose.ac.uk/21106/.

Full text

Abstract:

This study refers to experimental work and analysis of the barium sulphate deposition onto surfaces. In the oil field the formation of barium sulphate is a major flow assurance issue. The build up of the BaS04 inorganic scale on surfaces and facilities is undesirable as it causes increased function, reduction in production and other flow assurance issues. To date the overwhelming amount of research has been on the bulk precipitation of barite and little attention has been paid to deposition onto surfaces. This study shows an integrated approach to access the formation kinetics of barite at sur

APA, Harvard, Vancouver, ISO, and other styles

46

Skellern, Matthew G. "Structural and electronic properties of barium lanthanum vanadates." Thesis, University of Aberdeen, 2003. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU167989.

Full text

Abstract:

A study of the subsolidus region of the BaO-La2O3-V 2O5 phase diagram has been carried out. Four ternary phases can be prepared, one of which has not been previously identified. The four ternary phases are a palmierite solid solution Ba3-3xLa2x V2O8, Ba2LaV3O11, BaLa10V4O26 (new phase) and Ba3La 40V12O93. Addition of BaLa10V 4O26 and the previously omitted phase La1.42V 0.58)3.58 to the ternary system has resulted n a re-determination of the complete phase diagram. A comprehensive study of the Ba3-3xLa 2xV2O8 solid solution has been carried out, employing a number of techniques including x-ray

APA, Harvard, Vancouver, ISO, and other styles

47

Alshoaibi, Adil. "Electrical properties of rare earth-doped barium titanate." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/17289/.

Full text

Abstract:

Samples of undoped BaTiO3, BT were prepared by three mixed oxide routes; hand mixing, HM using a pestle and mortar, ball milling, BM using Y2O3-stabilised zirconia balls and planetary ball milling, PBM using tungsten carbide balls. The electrical properties of slow cooled (SC) and quenched (Q) BT material for HM, BM and PBM samples were studied by impedance spectroscopy, IS after heat treatments in air at different temperatures. IS measurements with application of applied voltage and in atmospheres of different oxygen partial pressure were used to determine the conduction mechanism. The applic

APA, Harvard, Vancouver, ISO, and other styles

48

Chien, Hsin-I. "Microfabrication of barium strontium titanate BaxSr(1-x)TiO3." Thesis, London South Bank University, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.618692.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Fardin, Ernest Anthony, and efardin@ieee org. "Barium Strontium Titanate Thin Films for Tunable Microwave Applications." RMIT University. Electrical and Computer Engineering, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080104.135507.

Full text

Abstract:

There has been unprecedented growth in wireless technologies in recent years; wireless devices such as cellular telephones and wireless local area network (WLAN) transceivers are becoming ubiquitous. It is now common for a single hardware device, such as a cellular telephone, to be capable of multi-band operation. Implementing a dedicated radio frequency (RF) front-end for each frequency band increases the component count and therefore the cost of the device. Consequently, there is now a requirement to design RF and microwave circuits that can be reconfigured to operate at different frequency

APA, Harvard, Vancouver, ISO, and other styles

50

Price, Tony S. "Nonlinear Properties of Nanoscale Barium Strontium Titanate Microwave Varactors." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4390.

Full text

Abstract:

Barium strontium titanate thin film varactors have been widely investigated for the purpose of creating tunable front-ends for RF and microwave systems. There is an abundance of literature observing the capacitance-voltage behavior and methods on improving tunability. However, there is a lack of thorough investigations on the nonlinear behavior, specifically the third order intermodulation distortion, and the parameters that impact it. There is also a research void that needs to be filled for nanoscale barium strontium titanate varactors as nanotechnology becomes increasingly prevalent in t

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!