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Dissertations / Theses on the topic 'Barium Strontium Titanate'

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Published: 4 June 2021

Last updated: 10 February 2022

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1

McNicholas, Kyle M. "Characterization of Native Point Defects in Barium Strontium Titanate / Strontium Titanate Heterostructures." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1337970955.

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2

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

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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

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3

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.

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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

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4

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

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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

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5

Yue, Hailing. "Design and Optimization of Barium Strontium Titanate Ferroelectric Varactors." University of Dayton / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1348779036.

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6

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.

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7

Balu, Venkatasubramani. "Barium strontium titanate thin film capacitors for high-density memories /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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8

Pan, Kuan-Chang. "Ferroelectric Barium Strontium Titanate Thin-Film Varactor Based Reconfigurable Antenna." University of Dayton / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1323453777.

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9

Tombak, Ali. "Radio Frequency Applications of Barium Strontium Titanate Thin Film Tunable Capacitors." NCSU, 2000. http://www.lib.ncsu.edu/theses/available/etd-20001129-002144.

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<p>TOMBAK, Ali. Radio Frequency Applications of Barium Strontium Titanate Thin Film Tunable Capacitors. (Under the supervision of Amir S. Mortazawi).Properties of thin film barium strontium titanate (BST) based capacitors for RF and microwave components were studied. The capacitors were measured for their tunability, loss tangent, frequency dependence of dielectric permittivity, and behavior at large RF signal amplitudes. A nonlinear equivalent circuit model for tunable BST capacitors was developed. Analysis of a tunable low pass filter fabrication using BST capacitors along with its intermodu

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10

Gurumurthy, Venkataramanan. "Barium Strontium Titanate films for tunable microwave and acoustic wave applications." [Tampa, Fla.] : University of South Florida, 2007. http://purl.fcla.edu/usf/dc/et/SFE0002089.

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11

Ketkar, Supriya Ashok. "Synthesis, Characterization and Applications of Barium Strontium Titanate Thin Film Structures." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4700.

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Barium Strontium Titanate (BST) based ferroelectric thin film devices have been popular over the last decade due to their versatile applications in tunable microwave devices such as delay lines, resonators, phase shifters, and varactors. BST thin films are promising candidates due to their high dielectric constant, tunability and low dielectric loss. Dielectric-tunable properties of BST films deposited by different deposition techniques have been reported which study the effects of factors, such as oxygen vacancies, film thickness, grain size, Ba/Sr ratio, etc. Researchers have also studied do

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12

Alema, Fikadu Legesse. "Multicomponent Doped Barium Strontium Titanate Thin Films for Tunable Microwave Applications." Diss., North Dakota State University, 2014. https://hdl.handle.net/10365/27258.

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In recent years there has been enormous progress in the development of barium strontium titanate (BST) films for tunable microwave applications. However, the properties of BST films still remain inferior compared to bulk materials, limiting their use for microwave technology. Understanding the film/substrate mismatch, microstructure, and stoichiometry of BST films and finding the necessary remedies are vital. In this work, BST films were deposited via radio frequency magnetron sputtering method and characterized both analytically and electrically with the aim of optimizing their properties.

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13

Ditum, Caroline Mary. "The fabrication and characterisation of barium strontium titanate ceramics and films." Thesis, University of Birmingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273739.

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14

Baylis, Samuel Andrew. "Tunable patch antenna using semiconductor and nano-scale Barium Strontium Titanate varactors." [Tampa, Fla.] : University of South Florida, 2007. http://purl.fcla.edu/usf/dc/et/SFE0001970.

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15

Sarma, Kumaravinotha N. Sanmugaratna. "Barium strontium titanate thin film based multi-layer structures for microwave application." Thesis, London South Bank University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.506714.

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16

O'Neill, D. "Growth and properties of barium strontium titanate thin films and multilayer stacks." Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396217.

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17

Lookman, Akeela. "Phase transition behaviour and metastability in barium strontium titanate thin film capacitors." Thesis, Queen's University Belfast, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426708.

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18

Grattan, Lesley Jane. "Investigation of thickness effects on the dielectric constant barium strontium titanate thin films." Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396079.

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19

Momose, Shun. "Spectroscopic Study on Metalorganic Chemical Vapor Deposition Mechanisms of Barium Strontium Titanate Films." 京都大学 (Kyoto University), 2002. http://hdl.handle.net/2433/149807.

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20

Vemulapalli, Sreekanth. "Design Of Tunable Band Pass Filter Using Barium Strontium Titanate (BST) Thin Films." University of Dayton / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1304697174.

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21

Manavalan, Sriraj G. "Structural and electrical properties of barium strontium titanate thin films for tunable microwave applications." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001155.

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22

Alsaei, Jawad. "Theory and simulation of electronic and optical properties of thin film barium strontium titanate." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/28579.

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In this thesis, we investigate, from first-principles, various means by which the energy gaps and the refractive index of BaTiO$_3$, SrTiO$_3$ and Ba$_{x}$Sr$_{1-x}$TiO$_3$ may be tuned, including epitaxial strain, alloying, and anionic doping. We start by discussing some limitations in the experimental spectroscopic ellipsometry technique that could affect the reliability of the measured optical spectra. Then, we investigate the effects of strain and alloying on the energy gaps of these materials. Interesting features in the gaps are observed as a function of strain, where it decreases and in

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23

Demydov, Dmytro V. "Nanosized alkaline earth metal titanates : effects of size on photocatalytic and dielectric properties." Diss., Manhattan, Kan. : Kansas State University, 2006. http://hdl.handle.net/2097/177.

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24

Kim, Dongsu. "Monolithic Analog Phase Shifters Based on Barium Strontium Titanate Coated Sapphire Substrates for WLAN Applications." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5211.

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The objective of this research is to implement monolithic analog phase shifters based on barium strontium titanate (BST) coated sapphire substrates for IEEE 802.11b wireless local area network (WLAN) applications. It has been known that several BST thin film properties such as high relative permittivity, electric field dependence, fast polarization response, relatively low loss, and high breakdown field, allow for miniaturization and high performance of analog phase shifters. Before attempting to implement BST phase shifters, coplanar waveguides (CPWs) and interdigital capacitors (IDCs) based

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25

Tam, Dickson Tai Shun. "An investigation on effect of Mn-doping on dielectric property of barium strontium stannate titanate." access abstract and table of contents access full-text, 2005. http://libweb.cityu.edu.hk/cgi-bin/ezdb/dissert.pl?msc-ap-b21175135a.pdf.

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Thesis (M.Sc.)--City University of Hong Kong, 2005.<br>At head of title: City University of Hong Kong, Department of Physics and Materials Science, Master of Science in materials engineering & nanotechnology dissertation. Title from title screen (viewed on Sept. 4, 2006) Includes bibliographical references.

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26

Yeung, Kwok Fai. "An investigation on effect of Mn-doping on dielectric property of barium strontium stannate titanate." access abstract and table of contents access full-text, 2005. http://libweb.cityu.edu.hk/cgi-bin/ezdb/dissert.pl?msc-ap-b21175317a.pdf.

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Thesis (M.Sc.)--City University of Hong Kong, 2005.<br>At head of title: City University of Hong Kong, Department of Physics and Materials Science, Master of Science in materials engineering & nanotechnology dissertation. Title from title screen (viewed on Sept. 4, 2006) Includes bibliographical references.

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27

Pena, Piedad. "Stoichiometry and Deposition Temperature Dependence of the Microstructural and Electrical Properties of Barium Strontium Titanate Thin Films." Thesis, University of North Texas, 1998. https://digital.library.unt.edu/ark:/67531/metadc279410/.

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Barium Strontium Titanate (BST) was deposited on Pt/ZrO2 / SiO2/Si substrates using liquid source metal organic chemical vapor deposition. A stoichiometry series was deposited with various GrII/Ti ratios (0.658 to 1.022) and a temperature series was deposited at 550 to 700°C. The thin films were characterized using transmission electron microscopy. Both series of samples contained cubic perovskite BST and an amorphous phase. The grain size increased and the volume fraction of amorphous phase decreased with increasing deposition temperature. The electrical and microstructural properties improv

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28

Saha, Sanjib. "Study Of Pulsed Laser Ablated Barium Strontium Titanate Thin Flims For Dynamic Random Access Memory Applications." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/208.

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The present study describes the growth and characterization of pulsed laser ablated Bao.sSro.sTiOs (BST) thin films. Emphasis has been laid on the study of a plausible correlation between structure and property in order to optimize the processing parameters suitably for required application. An attempt has been made to understand the basic properties such as, origin of dielectric response, charge transfer under low and high-applied electric fields across the BST capacitor and finally the dielectric breakdown process. Chapter 1 gives a brief introduction on the application of ferroelectric thi

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29

Ernst, Eric Michael. "Hydrothermal conversion of diatom frustules into barium titanate based replicas." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/24687.

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Thesis (M. S.)--Materials Science and Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Sandhage, Kenneth H.; Committee Co-Chair: Snyder, Robert L.; Committee Member: Sanders, Thomas H.

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30

Nadouf, Mohammed. "Synthese et etude de poudres submicroniques de titanate de baryum et de ses solutions solides avec le strontium." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13129.

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On etudie les solutions solides entre titanate de baryum et titanate de strontium. Deux methodes de synthese de ces perovskites sont abordees : la methode ceramique classique, ou l'on fait reagir des solides a haute temperature, et la methode oxalique qui fait intervenir la preparation d'un sel mixte que l'on decompose a basse temperature. Les relations entre la nature des sels des oxydes, le ph de precipitation, la temperature de reaction ou de precipitation et les caracteristiques structurales et proprietes physiques des ceramiques frittees sont etudiees

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31

Brown, Dustin Anthony. "Novel Approaches to Ferroelectric and Gallium Nitride Varactors." University of Dayton / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1398902436.

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32

Zhang, Qingteng. "Properties of Ferroelectric Perovskite Structures under Non-equilibrium Conditions." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4422.

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Ferroelectric materials have received lots of attention thanks to their intriguing properties such as the piezoelectric and pyroelectric effects, as well as the large dielectric constants and the spontaneous polarization which can potentially be used for information storage. In particular, perovskite crystal has a very simple unit cell structure yet a very rich phase transition diagram, which makes it one of the most intensively studied ferroelectric materials. In this dissertation, we use effective Hamiltonian, a first-principles-based computational technique to study the finite-temperature p

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33

Podpirka, Adrian Alexander. "Studies on Synthesis, Structural and Electrical Properties of Complex Oxide Thin Films: Ba1-xSrxTiO3 and La2-xSrxNiO4." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10247.

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High performance miniaturized passives are of great importance for advanced nanoelectronic packages for several applications including efficient power delivery. Low cost thin film capacitors fabricated directly on package (and/or on-chip) are an attractive approach towards realizing such devices. This thesis aims to explore fundamental frequency dependent dielectric and insulating properties of thin film high-k dielectric constant in the perovskite and perovskite-related complex oxides. Throughout this thesis, we have successfully observed the role of structure, strain and oxygen stoichiometr

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34

Peelamedu, Ranganathan Ravip. "Effects of Deposition Temperature and Post Deposition Annealing on the Electrical Properties of Barium Strontium Titanate Thin Film for Embedded Capacitor Applications." Master's thesis, University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2951.

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A higher degree of system level integration can be achieved by integrating the passive components into semiconductor devices, which seem to be an enabling technology for portable communication and modern electronic devices. Greater functionality, higher performance and increase in reliability can be achieved by miniaturizing and reducing the number of components in integrated circuits. The functional potential of small electronic devices can be enormously increased by implementing the embedded capacitors, resistors and inductors. This would free up surface real estate allowing either a smaller

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35

Wang, Shu. "Experimental Investigation of New Inductor Topologies." University of Dayton / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1460733373.

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36

Sun, Jingyu. "Carbon nanotube growth on perovskite substrates." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:2b77fe9b-7313-49b2-b490-70574b4af565.

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This thesis reports on the chemical vapour deposition (CVD) growth of carbon nanostructures (mainly carbon nanotubes (CNTs)) on perovskite oxide surfaces with the aid of various catalysts. Two types of perovskite oxide, single crystal SrTiO3 (001) and polycrystalline BaSrTiO<sub>3</sub>, have been used as catalyst supports (in metal-catalyst-involved CVD routes) or as catalysts (via metal-catalyst-free CVD routes) for the growth of carbon nanostructures. In metal-catalyst-involved cases, SrTiO<sub>3</sub> (001) single crystal has been proven, for the first time, to serve as a substrate for the

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37

Spatz, Devin. "Optimization of BST Thin Film Phase Shifters for Beam Steering Applications." University of Dayton / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1493299280169257.

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38

Midy, Jean. ""Etude de la croissance du titanate de baryum et de strontium en couches minces et de ses propriétés électriques sur une large gamme de fréquence"." Phd thesis, Université de Valenciennes et du Hainaut-Cambresis, 2012. http://tel.archives-ouvertes.fr/tel-00739398.

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Le titanate de baryum et de strontium (BaSrTiO3) est un matériau diélectrique de synthèse à forte permittivité possédant la propriété d'être accordable lorsqu'il est soumis à un champ électrique. Ceci est lié à sa structure cristalline à maille perovskite. Son intégration dans des dispositifs capacitifs est donc prometteuse pour l'industrie de la microélectronique. Il est déposé en couches minces par pulvérisation cathodique à partir de cibles pressées à froid au sein du laboratoire. L'étude de la croissance du matériau, dopé ou non, et de ses propriétés électriques à 100 khz ont permis d'envi

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39

Kumar, Manish. "High density and high reliability thin film embedded capacitors on organic and silicon substrates." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26655.

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Thesis (M.S.)--Materials Science and Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Tummala Rao; Committee Member: Pulugurtha Raj; Committee Member: Wong C P. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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40

Cure, David. "Reconfigurable Low Profile Antennas Using Tunable High Impedance Surfaces." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4659.

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This dissertation shows a detailed investigation on reconfigurable low profile antennas using tunable high impedance surfaces (HIS). The specific class of HIS used in this dissertation is called a frequency selective surface (FSS). This type of periodic structure is fabricated to create artificial magnetic conductors (AMCs) that exhibit properties similar to perfect magnetic conductors (PMCs). The antennas are intended for radiometric sensing applications in the biomedical field. For the particular sensing application of interest in this dissertation, the performance of the antenna sub-system

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41

Pelegrini, Marcus Vinicius. "Deposição e caracterização de filmes de titanato de estrôncio e bário (Ba0,5Sr0,5(TiO3)) visando a sua utilização na fabricação de defasadores variáveis operando em 60 GHZ." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3140/tde-26082016-154730/.

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Este trabalho, realizado junto ao Grupo de Novos Materiais e Dispositivos (GNMD) pertencente ao Laboratório de Microeletrônica (LME) da Universidade de São Paulo, teve como objetivo correlacionar algumas propriedades físico-químicas de filmes finos de Ba1-XSrxTiO3 (BST), obtidos pela técnica de pulverização catódica reativa (sputtering), com os parâmetros de deposição, visando a fabricação de defasadores inteligentes operando em 60 GHz. Propriedades como cristalinidade e composição química foram estudadas e relacionadas com o tipo de substrato sobre o qual os filmes finos de BST foram deposita

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42

Rutkowski, Mitchell M. "Growth Parameter Dependence and Correlation of Native Point Defects and Dielectric Properties in Ba_xSr_1-xTiO₃ Grown by Molecular Beam Epitaxy." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366299175.

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43

Horikawa, Tsuyoshi. "A study of advanced integrated semiconductor device and process technologies for data storage and transmission." 京都大学 (Kyoto University), 2016. http://hdl.handle.net/2433/215222.

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44

Kim, Jang-Yong. "Processing and On-Wafer Test of Ferroelectric Film Microwave Varactors." Doctoral thesis, Stockholm : Information and Communication Technology (ICT), Kungl. Tekniska högskolan (KTH), 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4226.

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45

Shen, Ya. "BST-Inspired Smart Flexible Electronics." Doctoral diss., University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5492.

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The advances in modern communication systems have brought about devices with more functionality, better performance, smaller size, lighter weight and lower cost. Meanwhile, the requirement for newer devices has become more demanding than ever. Tunability and flexibility are both long-desired features. Tunable devices are 'smart' in the sense that they can adapt to the dynamic environment or varying user demand as well as correct the minor deviations due to manufacturing fluctuations, therefore making it possible to reduce system complexity and overall cost. It is also desired that electronics

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46

Nadouf, Mohammed. "Synthèse et étude de poudres submicroniques de titanate de baryum et de ses solutions solides avec le strontium." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37599956b.

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47

Vykoukalová, Tereza. "Příprava a vlastnosti feroelektrických keramických materiálů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230401.

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The aim of the work was a processing of ceramic material based on BST for ferroelectric application. Wet chemical techniques based on precipitations and sol-gel methods with ultrasound, hydrothermal or mechanochemical treatment supporting deaglomeration and reducing particle growth were used for BST ceramic powder synthesis. Suitable powders were selected by the evaluation of particle morphology, size and agglomeration, from these powders BST bulk ceramic with defined phase composition and morphology applicable for ferroelectric applications was prepared. It was found, that the most suitable m

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48

(7027682), Matthew J. Michie. "GRAIN GROWTH RATE TRANSITIONS IN BARIUM STRONTIUM TITANATE." Thesis, 2019.

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<div>Understanding grain growth in dielectric ceramics is essential to controlling the electrical and mechanical properties necessary to produce ceramic capacitors and sensors. The effect of alloying barium titanate with strontium titanate on the equilibrium crystal shape was investigated in order to determine possible impacts on grain growth. The equilibrium crystal shape was studied through three experimental methods to identify possible changes in grain boundary energy or anisotropy with changing composition.</div><div>The first method was by imaging intergranular pores to observe faceting

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陳坤源. "Preparationand characterization of films and gels of barium titanate and strontium titanate." Thesis, 1988. http://ndltd.ncl.edu.tw/handle/66695120755301975476.

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50

LIU, YI-ZHENG, and 劉依政. "The PTCR properties of (barium-lead-strontium) titanate ceramics." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/04603668200751545314.

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