ST6601 Barium Strontium Titanate Target (BaSrTiO3) (BST)

Product Overview

Stanford Advanced Materials (SAM) presents the Barium Strontium Titanate Target (BaSrTiO₃ or BST), a premium ceramic sputtering material engineered for high-performance applications. BST is extensively utilized in tunable microwave devices, DRAM capacitors, and advanced thin-film technologies, owing to its superior dielectric, ferroelectric, and electro-optic properties.

Related Products: Barium Sputtering Target, Ba, Barium Titanate Sputtering Target, BaTiO3, Strontium Sputtering Target, Sr, Strontium Titanate Sputtering Target, SrTiO3, Titanium Sputtering Target, Ti, Aluminum Titanium Sputtering Target, Al/Ti

Key Specifications

• Material Composition: BaSrTiO₃
• Purity Level: 99.9%
• Form Factor: Planar Disc

Note: The specifications provided are based on theoretical data. For custom requirements and detailed inquiries, please reach out to us.

Detailed Product Description

The Barium Strontium Titanate Target (BaSrTiO₃ or BST) is a sophisticated perovskite-structured ceramic renowned for its remarkable dielectric, ferroelectric, and electro-optic characteristics. Its dielectric constant can be precisely tuned using applied electric fields, making BST ideal for devices that require voltage-controlled functionality. By adjusting the ratio of barium to strontium, the BST compound undergoes a paraelectric-to-ferroelectric phase transition at different Curie temperatures, which influences its permittivity and loss parameters.

BST exhibits exceptional thermal stability and chemical resistance, enabling the formation of high-quality, uniform thin films through sputtering processes. These thin films achieve high crystallinity and smooth surface morphology, which are crucial for the performance of high-frequency and high-density integrated devices. Additionally, BST targets are chemically compatible with commonly used electrode materials and substrates, facilitating the production of low-loss, high-capacitance dielectric layers in compact electronic systems.

Applications

• Tunable Microwave Devices: Utilized in tunable capacitors, phase shifters, and filters for microwave and RF communication systems due to their voltage-dependent dielectric properties.
• Dynamic Random-Access Memory (DRAM): Ideal for capacitor layers in DRAM devices thanks to their high dielectric constant.
• Ferroelectric Thin-Film Devices: Employed in non-volatile memory technologies such as Ferroelectric RAM (FeRAM).
• Electro-Optic Devices: Used in modulators and other photonic components owing to their non-linear optical characteristics.
• Multilayer Ceramic Capacitors (MLCCs): Serves as a foundational material for creating high-capacitance, miniaturized capacitors.

Packaging Details

Our BST Targets are carefully packaged to ensure their integrity during shipping and storage. Depending on the size, smaller targets are securely housed in polypropylene (PP) boxes, while larger targets are transported in custom-built wooden crates. We emphasize customized packaging solutions, utilizing appropriate cushioning materials to guarantee optimal protection throughout transportation.

Packaging Options:

• Carton
• Wooden Crate
• Customized Packaging

Manufacturing Process

Manufacturing Workflow

1. Material Preparation: Precisely measure and blend high-purity barium, strontium, and titanium with other necessary components in specified ratios.
2. Synthesis: Utilize advanced synthesis techniques such as solid-state synthesis or sol-gel processes to create the BaSrTiO₃ compound.
3. Crystallization Control: Manage the crystallization process to achieve a dense microstructure with minimal porosity, ensuring structural integrity.
4. Forming: Shape the synthesized material into planar discs or other required forms, maintaining stringent dimensional and surface quality standards.
5. Machining and Finishing: Accurately machine the targets to meet specific dimensions and apply surface treatments for an optimal finish.
6. Quality Assurance: Conduct comprehensive testing to verify that the targets fulfill all purity, compositional, and performance specifications.

Testing Methods

1. Chemical Composition Verification: Employ techniques such as Glow Discharge Mass Spectrometry (GDMS) or X-ray Fluorescence (XRF) to confirm the material meets purity and composition standards.
2. Mechanical Properties Assessment: Perform tests for tensile strength, yield strength, and elongation to evaluate material performance.
3. Dimensional Measurements: Measure thickness, width, and length to ensure compliance with specified tolerances.
4. Surface Quality Inspection: Identify defects such as scratches, cracks, or inclusions through visual and ultrasonic examinations.
5. Hardness Evaluation: Assess material hardness to ensure uniformity and mechanical reliability.

Frequently Asked Questions

Q1: What are the primary applications of Barium Strontium Titanate (BST)?
A1: BST is extensively used in tunable microwave devices, DRAM capacitors, non-volatile memory technologies, and electro-optic components due to its high dielectric constant and tunable ferroelectric properties.

Q2: Can BST targets be customized in terms of size and shape?
A2: Yes, BST targets are available in various custom diameters, thicknesses, and geometries, including planar and rotary designs, to accommodate different deposition systems.

Q3: What are the storage and handling recommendations for BST targets?
A3: BST targets should be stored in a dry, clean environment to prevent exposure to moisture and contaminants. It is advisable to handle them using gloves or appropriate tools to avoid contamination.

Performance Comparison: BST vs. Competing Materials

Raw Materials Information

Barium (Ba)

Barium is a soft, silvery alkaline earth metal with the atomic number 56. Highly reactive, especially with water and air, barium is typically found in nature as minerals like barite (BaSO₄) and witherite (BaCO₃). Due to its high density and excellent electron emission properties, barium is utilized in various applications, including ceramics, radiation shielding, and electronics.

Strontium (Sr)

Strontium is an alkaline earth metal with the atomic number 38, recognized for its soft, silvery appearance. It is highly reactive and forms salts that burn with a bright red flame, making it valuable in fireworks, flares, and certain medical imaging applications. Strontium, along with barium, is essential in producing ferroelectric and high-dielectric ceramics, such as BST materials.

Titanium (Ti)

Titanium is a transition metal with the atomic number 22, celebrated for its exceptional strength-to-weight ratio, corrosion resistance, and high-temperature stability. Titanium dioxide (TiO₂) is widely used in photocatalysis, coatings, optical films, and solar cells. Titanium metal is a crucial material in aerospace, medical, and chemical industries due to its durability and non-reactive nature.