Metallic Nanocrystallites-Coated Piezoelectric Quartz for Applications in Gas Sensing

Li, Hongming; Wei, Bee-Yu; Pan, Shiow-Feng; Tsai, Shirley C.; Lin, Hsin-Fu

doi:10.1023/a:1024482502778

Cited by 8 publications

(3 citation statements)

References 12 publications

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“…Among the many types of ferroelectric materials, the barium strontium titanate (BST) has been the most intensively investigated because of its high dielectric constant, low dielectric loss and good thermal stability. [1][2][3][4] Moreover, the temperature range in which the ferroelectric behavior exists can be easily controlled by adjusting the barium-to-strontium ratio. However, the electrical properties of BST materials are closely linked to their microstructural feature and fabrication process.…”

Section: Introductionmentioning

confidence: 99%

Barium strontium titanate nanocrystalline thin films prepared by soft chemical method

Mazon¹,

Zaghete

Varela

et al. 2007

Journal of the European Ceramic Society

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Section: Introductionmentioning

confidence: 99%

Barium strontium titanate nanocrystalline thin films prepared by soft chemical method

Mazon¹,

Zaghete

Varela

et al. 2007

Journal of the European Ceramic Society

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“…Among various materials, nanostructured BST thin films are attractive candidates for application in ultra high density memory, voltagecontrolled oscillator, tunable filters, and phase shifters [1][2][3][4][5][6]. The electrical properties of BST thin films are believed to be closely linked to their crystalline feature [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Influence of Space Charge Layers on the Dielectric Properties of Ba_0.6Sr_0.4TiO₃Nanostructured Thin Films

Sharma

Singh

2015

Integrated Ferroelectrics

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Barium strontium titanate (Ba 0.6 Sr 0.4 TiO 3 ) nanostructured thin films have been deposited on platinized silicon substrates by the sol-gel method. The as-fired films were found to be amorphous, which crystallize to cubic phase after annealing at 550 • C in air for one hour. The low-frequency dielectric responses of the BST films were measured as functions of frequency range from 1 kHz to 1MHz. The thickness dependence dielectric constant of the BST thin films were measured in the temperature range from −150 • C to 150 • C at 100 kHz and discussed in the light of an interfacial dead layer. All the samples showed a diffuse type phase transitions. Both the dielectric constant and loss tangent showed anomaly peaks at about 10 • C, which corresponds to a tetragonal ferroelectric-to-cubic paraelectric phase transition.

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“…Research in ferroelectric thin film nanostructures have gained considerable attention due to their possible application in many electronic devices such as storage capacitor in the next generation ultralarge-scale-integrated (ULSI) dynamic random access memory (DRAM) devices, decoupling capacitors, voltage-driven frequency tuning devices, and microwave tuneable applications [1][2][3][4][5][6] etc. Among various ferroelectric materials, lead free perovskites such as barium titanate [(BaTiO 3 )], barium strontium titanate [(Ba,Sr)TiO 3 or BST] etc.…”

Section: Introductionmentioning

confidence: 99%

Structure and Properties of BT and BST Thin Films

Sharma

2013

Ferroelectrics

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Barium titanate [BT] and barium strontium titanate [BST] solid solution films have been fabricated by a modified sol-gel processing technique from barium acetate {Ba(CH 3 COOH) 2 }, strontium acetate [Sr(CH 3 COOH) 2] and titanium (IV) Isopropoxide [Ti[(CH 3 ) 2 CHO] 4 ] precursors. The as-fired films were found to be amorphous that crystallized to perovskite phase after annealing the films at 550 • C in air for one hour. The dielectric constant (ε) and loss tangent (tanδ) of the BaTiO 3 film at 1 kHz was found to be 360 and 0.01 respectively. The dielectric constant showed a broad anomaly peak at 130 • C that confirms ferroelectric-paraelectric transition. The room temperature dielectric constant and loss factor of this film were found to be 450 and 0.005 respectively. The dielectric anomaly peak of the BST film was found to shift towards lower temperature with Sr content. Both BT and BST showed butterfly capacitance-voltage (C-V) and conductance-voltage (G-V) loops, confirming the existence of ferroelectricity in these films.

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Metallic Nanocrystallites-Coated Piezoelectric Quartz for Applications in Gas Sensing

Cited by 8 publications

References 12 publications

Barium strontium titanate nanocrystalline thin films prepared by soft chemical method

Barium strontium titanate nanocrystalline thin films prepared by soft chemical method

Influence of Space Charge Layers on the Dielectric Properties of Ba_0.6Sr_0.4TiO₃Nanostructured Thin Films

Structure and Properties of BT and BST Thin Films

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Metallic Nanocrystallites-Coated Piezoelectric Quartz for Applications in Gas Sensing

Cited by 8 publications

References 12 publications

Barium strontium titanate nanocrystalline thin films prepared by soft chemical method

Barium strontium titanate nanocrystalline thin films prepared by soft chemical method

Influence of Space Charge Layers on the Dielectric Properties of Ba0.6Sr0.4TiO3Nanostructured Thin Films

Structure and Properties of BT and BST Thin Films

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Influence of Space Charge Layers on the Dielectric Properties of Ba_0.6Sr_0.4TiO₃Nanostructured Thin Films