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Magnetostatic Boundary Conditions

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Updated: Mar 14, 2026

Chemical Precipitation Method for the Synthesis of Nb2O5 Modified Bulk Nickel Catalysts with High Specific Surface Area

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What determines the interfacial configuration of Nb/Al₂O₃ and Nb/MgO interface.

J L Du¹, Y Fang², E G Fu¹

¹State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, P. R. China.

Scientific Reports

|October 5, 2016

Summary

Niobium (Nb) films deposited on sapphire and magnesium oxide substrates exhibit strong (110) texture. Sapphire substrates yield higher crystalline quality due to optimized lattice mismatch and interface bonding, influencing film orientation relationships.

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Niobium Oxide Films Deposited by Reactive Sputtering: Effect of Oxygen Flow Rate

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Published on: September 28, 2019

Area of Science:

Materials Science
Thin Film Deposition
Surface Science

Background:

Niobium (Nb) films are crucial in various electronic applications.
Controlling the crystalline structure and orientation of Nb films on ceramic substrates is vital for device performance.
Understanding interfacial properties is key to optimizing thin film growth.

Purpose of the Study:

To investigate the structural properties and orientation relationships (ORs) of Nb films deposited on single crystal aluminum oxide (Al2O3) (110) and magnesium oxide (MgO) (111) substrates.
To compare the crystalline quality of Nb films grown on different substrates.
To elucidate the fundamental mechanisms governing interfacial configuration.

Main Methods:

E-beam evaporation technique for Nb film deposition.
Experimental characterization of film structure and ORs.
First-principles calculations to simulate interfacial properties.

Main Results:

Nb films consistently showed a strong (110) texture on both substrates.
Nb films on Al2O3(110) exhibited superior crystalline quality compared to those on MgO(111).
Lattice mismatch and interface bonding strength were identified as critical factors influencing crystalline perfection and ORs.

Conclusions:

The crystalline quality and orientation of Nb films are significantly influenced by substrate choice.
Both lattice mismatch and interface bonding strength are fundamental to determining the interfacial configuration and film properties.
This study provides insights into optimizing Nb film growth on ceramic substrates for advanced applications.