Strongest magnetic field created

In April 2018, Shojiro Takeyama and his team at the University of Tokyo, Japan, recorded the largest magnetic field ever generated in a laboratory experiment. Aimed to produce 700 Tesla field, the experiment actually produced 1,200 Tesla and blew the doors off the steel containment chamber in which the experiment was contained. This field is about 400 times higher than those generated by the magnets used in modern hospital MRI machines, and approximately 50 million times stronger than the Earth's own magnetic field. The field lasted for 40 microseconds and consumed around 3.2 megajoules of electrical energy. It is this sort of high intensity magnetic field that may ultimately be required for Fusion Nuclear Power, and so this experiment is crucial in proving that these field strengths can be reliably and repeatedly reproduced.

Bigger magnetic fields have been created outdoors using exposives and lasers (up to possibly 2,800 Teslas), but these are unreliable, short lived, and ultimately unverifiable due to the nature of the field produced.