A perpendicular field electromagnet with a 250 mm access bore.

Area of Science:

• Materials Science
• Condensed Matter Physics
• Electromagnetism

Background:

• Precise control over magnetic fields is crucial for studying material properties.
• Existing electromagnets often have limitations in field strength, uniformity, or sample environment control.

Purpose of the Study:

• To design and characterize a laboratory electromagnet for perpendicular flux applications.
• To provide a versatile platform for thin film sample analysis under controlled magnetic and thermal conditions.

Main Methods:

• A laboratory electromagnet was designed with a shaped ferromagnetic core for field amplification and homogenization.
• The system incorporates a 250 mm clear access bore and a thermally regulated, isolated sample stage.
• Magnetic field uniformity and sample temperature stability were rigorously tested.

Main Results:

• The electromagnet generates magnetic fields up to ±0.48 T with high uniformity (±1.5 mT within a 28 mm² zone).
• The system exhibits low thermal dissipation (<1 kW at maximum field).
• Precise temperature control (±5 mK) is maintained for the sample stage, even at high magnetic fields.

Conclusions:

• The developed electromagnet is a robust tool for perpendicular flux studies on thin films.
• Its design balances high magnetic field generation with excellent sample environment control.
• This apparatus facilitates advanced research in condensed matter physics and materials science.