铌掺杂钛酸锶衬底(Nb: SrTiO₃)

描述

铌掺杂钛酸锶衬底(Nb: SrTiO₃)

铌掺杂钛酸锶(Nb: SrTiO₃)衬底是一种高性能导电单晶材料,在氧化物电子学、铁电薄膜、高温超导薄膜、光电子器件及表面科学研究中应用广泛。通过在钛酸锶晶格中引入铌离子(Nb⁵⁺),可显著提高其载流子浓度和导电性,使其在薄膜外延生长中能够作为优良的导电衬底或电极层,减少界面电阻并提升器件性能。

这种衬底因其与多种氧化物功能薄膜(如SrRuO₃、La₁₋ₓSrₓMnO₃、BaTiO₃、YBa₂Cu₃O₇₋δ等)晶格匹配度高,且热膨胀系数接近,在外延生长过程中可获得高质量的薄膜结构。


物理性能

性能 详情
材料 铌掺杂钛酸锶(Nb: SrTiO₃)
晶体结构 立方晶系
晶格常数 (Å) a ≈ 3.905
掺杂类型 铌(Nb⁵⁺)
生长方法 柯氏拉法(Czochralski)或提拉法
硬度 ~6(莫氏)
熔点 ~2080°C
密度 (g/cm³) ~5.11
纯度 ≥99.95%(3N5)
电阻率(常温) ~0.01–0.1 Ω·cm(可根据掺杂浓度定制)

规格参数

参数 详情
尺寸 (mm) 5×5、10×5、10×10、15×15、20×15、20×20、直径 1″、2″
厚度 0.5 mm、1.0 mm
抛光类型 SSP(单面抛光)或 DSP(双面抛光)
晶向 <100> 或 <111>
定向精度 ±0.5°
表面粗糙度 (Ra) ≤5Å(AFM测量,5µm × 5µm)

包装

苏州科跃生产的Nb: SrTiO₃衬底在Class 1000级洁净室内完成切割、抛光、清洗及检测,并在Class 100洁净环境中封装于洁净袋或晶圆盒中,确保运输与储存过程中的洁净度与稳定性。

这种高标准的制造与包装保证了其在导电衬底、功能薄膜外延及高端光电器件制造中的卓越表现。

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常见问题

Sputtering targets are materials used in thin-film deposition processes to create coatings on substrates. They are used in industries like semiconductors, optics, photovoltaics, and electronics.

Evaporation materials are used in Physical Vapor Deposition (PVD) processes, where materials are heated and evaporated to form a thin film on a substrate. These are critical for applications in optics, wear protection, and decorative coatings.

Boat crucibles are used as containers for evaporation materials during PVD processes. They help to uniformly evaporate materials onto the substrate for thin film formation.

Sputtering uses energetic particles to eject material from a target, while evaporation involves heating a material until it vaporizes and deposits on a substrate. Both are common methods in Physical Vapor Deposition (PVD) for creating thin films.

Consider the material composition, purity, target size, and application-specific requirements such as the thickness and uniformity of the film.

Yes, we offer customized sputtering targets, evaporation materials, and crucibles to meet specific customer requirements for size, material composition, and purity.

Yes, we can assist in selecting the most suitable material based on your application, whether it’s for optical coatings, semiconductor fabrication, or decorative finishes.

Yes, we offer both bulk and small quantities of sputtering targets, evaporation materials, and spherical powders to support research, prototyping, and development projects.