Understanding the 35.6 Tesla Breakthrough

Chinese scientists have shattered the world record for the strongest all-superconducting magnet, achieving a staggering central magnetic field of 35.6 teslas at the Synergetic Extreme Condition User Facility (SECUF) in Beijing's Huairou Science City. This fully superconducting user magnet, with a practical 35-millimeter bore, is designed for researchers worldwide to conduct experiments under extreme conditions. Unlike hybrid magnets that combine superconducting and resistive elements, this all-superconducting design relies entirely on superconducting materials cooled to ultra-low temperatures, enabling zero electrical resistance and highly stable fields with minimal energy use.

The magnet's field strength dwarfs everyday magnets—it's approximately 12 to 24 times stronger than those in hospital MRI machines (typically 1.5 to 3 teslas) and over 700,000 times more powerful than Earth's natural magnetic field of about 50 microteslas. It can maintain peak performance for more than 200 hours, integrating seamlessly with high-pressure and low-temperature setups for advanced probing of materials.

This milestone positions China at the forefront of high-magnetic-field science, opening doors for university researchers to explore quantum phenomena previously inaccessible. For academics pursuing careers in physics or materials science, facilities like SECUF highlight the growing opportunities in higher ed research jobs within China's vibrant scientific ecosystem.

Technical Design and Innovation Behind the Magnet

The all-superconducting magnet employs advanced high-temperature superconducting (HTS) materials, likely including rare-earth barium copper oxide (REBCO) tapes, in a no-insulation (NI) configuration for the innermost coil. Superconductors (full name: superconducting materials) exhibit zero electrical resistance and the Meissner effect—expelling magnetic fields from their interior—when cooled below a critical temperature, typically using liquid helium or cryocoolers.

Step-by-step construction: First, low-temperature superconducting (LTS) outer coils (using niobium-tin, Nb3Sn) provide the base field. An HTS insert coil generates the additional high field without quenching (sudden loss of superconductivity). The NI design self-heals current imbalances, enhancing stability. Precise monitoring by the Institute of Physics CAS ensures real-time health checks, preventing failures under extreme stress.

• Outer LTS solenoid: Generates ~20-25 T base field.
• HTS NI insert: Boosts to 35.6 T, compact for user access.
• Cryogenic system: Maintains 4 K for LTS, higher for HTS.
• Protection: Quench detection and energy dump systems.

Such innovations stem from iterative upgrades since 2023 prototypes, showcasing China's prowess in manufacturing scalable HTS conductors.

Key Players and Institutions Driving the Achievement

The Institute of Electrical Engineering (IEE) of the Chinese Academy of Sciences (CAS) led design, fabrication, and system integration, while the Institute of Physics (IOP) CAS tackled HTS monitoring and measurement challenges. Luo Jianlin, a senior researcher at IOP-CAS, emphasized its utility for nuclear magnetic resonance (NMR) and specific heat measurements in quantum materials research.

Located in Huairou Science City, SECUF—accepted in February 2025—combines strong fields with ultra-low temperatures, high pressures, and ultrafast optics. Though CAS-led, it fosters collaborations with top universities like the University of Science and Technology of China (USTC) and Tsinghua University, which contribute to high-field studies. Aspiring professors and postdocs can find aligned roles via postdoc positions or China academic jobs.

Historical Context: Evolution of Superconducting Magnet Records

Superconductivity was discovered in 1911 by Heike Kamerlingh Onnes in mercury at 4.2 K. The first practical superconducting magnet emerged in 1961 at MIT using Nb3Sn, reaching low fields. Progress accelerated: 1980s saw 10 T+ magnets for particle accelerators like LHC.

All-superconducting records timeline:

• 2017: Japan ~30 T hybrid-SC.
• 2019: US MagLab 32 T all-SC (world record until now).
• 2023: China prototypes ~30+ T.
• 2026: China 35.6 T all-SC user magnet.

This leap reflects China's investment in HTS tech, surpassing resistive/hybrid limits (e.g., SHMFF Hefei's 45 T hybrid).

Photo by Steve Johnson on Unsplash

Transformative Applications in Cutting-Edge Research

High-field magnets unlock matter's secrets under extreme conditions. In materials science, 35.6 T probes quantum oscillations, revealing electron behavior in high-Tc superconductors.

• NMR spectroscopy: Higher resolution for biomolecular structures.
• Specific heat/magnetostriction: Phase transitions in exotic materials.
• Life sciences: Protein folding, cellular responses.

Nuclear fusion benefits from compact, efficient magnets for tokamaks like CFETR. Medical advances include enhanced MRI and targeted drug delivery. University labs worldwide will leverage SECUF for publications, boosting careers—check higher ed career advice for tips.

Implications for Chinese Higher Education and Global Science

This breakthrough elevates China's research infrastructure, rivaling US MagLab and Europe's HFML. Universities gain unprecedented access, fostering PhD training and international collaborations. In Hefei and Beijing hubs, USTC and Peking University researchers anticipate surges in grants and papers on quantum materials.

Stakeholder views: Luo Jianlin notes its role in disease diagnosis via advanced imaging. Globally, it accelerates fusion energy timelines, vital for climate goals. Challenges like HTS cost persist, but solutions via scaling production emerge.

For academics, this signals booming demand for experts; explore professor jobs in China's top institutions.

Challenges Overcome and Future Roadmap

Key hurdles: Quench protection in HTS inserts, mechanical stresses from Lorentz forces (step-by-step: current x field = force, causing hoop stress). Solutions included advanced winding techniques and real-time diagnostics.

Future: Push to 40+ T, integrate AI for control, expand user base. SECUF plans more stations by 2030, aligning with China's sci-tech self-reliance.

Career Opportunities in High-Magnetic-Field Research

This record underscores China's appeal for STEM talent. Universities seek postdocs, lecturers in superconductivity. Benefits include state funding, international exposure. Actionable: Tailor CVs for HTS expertise—use our free resume template. Link to higher ed jobs, rate my professor, and career advice for success.

Photo by Synth Mind on Unsplash

Global Perspectives and Collaborative Horizons

Western outlets hail it as a strategic leap, though some note US export controls on tech. Balanced view: Shared facility promotes open science. Case study: MagLab's 32 T enabled topological insulator discoveries. Expect similar from 35.6 T.