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If it is a very regular dynamic magnetic field, it will be relatively easy to simulate.

But if the pattern is not obvious, or even the magnetic field is unpredictable, the difficulty of simulation will be greatly increased.

Seeing that Ning Chen's expression was a little serious, Tao Wei asked tentatively:

"How is it, Ning Chen, what are the results of the magnetic field measurement?"

It was also the first time for Tao Wei and others to use this kind of equipment. They were relatively unfamiliar with the operation of the equipment and the use of software, so they could only wait for Ning Chen's answer.

"It's not particularly ideal, because the measured magnetic field is more complicated and is a dynamic magnetic field with unclear rules, so it will be more difficult to simulate. I will analyze the magnetic field data again tonight to see if there is anything good. Here’s a solution.”

After listening to Ning Chen's answer, everyone felt a little disappointed. It seemed that this direction was not so easy to achieve.

However, Ning Chen did not completely reject this idea immediately, which made everyone still have some hope in their hearts.

In the evening, after returning to the dormitory, Ning Chen was not in the mood to care about other things. He sat directly at the desk and studied the magnetic field data he had just tested.

One of Ning Chen's great advantages now is that he has good abilities in multiple disciplines, which is something that many experts in academia do not have.

After Ning Chen's breakthrough in physics, this advantage became more and more obvious.

Ning Chen carefully analyzed the magnetic field data in the computer, combined with his knowledge of various disciplines, and used his brain to run with all his strength.

Unknowingly, Ning Chen had already entered a state of highly concentrated flow, completely ignoring the passage of time outside.

Ning Chen's analysis and calculation process quickly filled up sheets of draft paper.

After deriving some new formulas each time, Ning Chen also continued to perform fittings in the modeling software, comparing the fitting degree of the simulated magnetic field and the actual magnetic field.

Finally, after several hours of continuous work, Ning Chen succeeded in making the fitting degree of the two magnetic fields exceed 99.9%.

"According to this degree of fitting... it should be able to almost offset the lattice distortion and dislocation caused by excess K element."

Because the actual magnetic field at the pinning center has no obvious rules, no matter how perfect the formula is, it cannot achieve a 100% fitting degree.

As long as these negative effects caused by excess K element can be offset to the greatest extent, the processing of superconducting wire strips is entirely possible.

At this time, although Ning Chen's body was very tired, his brain was still in a relatively excited state.

Ning Chen couldn't wait to go to the laboratory right away to verify whether the magnetic field he had just simulated would really play a key role.

But after all, it was already midnight, so Ning Chen still tried to suppress the excitement and calm down.

Ning Chen used the "breathing sleep method" to let himself fall asleep peacefully in a few minutes.

Early the next morning, Ning Chen came to the laboratory, ready to verify the effect of his simulated magnetic field last night.

Soon after, Tao Wei also came to the laboratory.

Seeing Ning Chen coming so early, Tao Wei asked curiously:

"Ning Chen, how were your analysis results last night? Are they still satisfactory?"

"Academician Tao, I built a new magnetic field model last night, and the fitting degree to the actual magnetic field is about 99.9%. Of course, the specific effect depends on the performance in the experiment."

Seeing that Ning Chen really built a model in just one night, Tao Wei felt incredible and at the same time looked forward to the experiment.

After everyone came to the laboratory, Tao Wei quickly organized everyone to start the experiment together.

Just like yesterday, at the beginning of the experiment, everyone first added excess K to the K-containing iron-based superconductor powder, and then lowered the test temperature to below the superconducting critical temperature of the material.

At this time, Ning Chen used the three-dimensional Helmholtz coil to test the magnetic field in the line and fit it with the magnetic field he simulated.

Due to the randomness of the magnetic field, there is still a very slight difference in the magnetic field between the lines yesterday and yesterday.

But even so, Ningchen's simulated magnetic field can still achieve a high degree of fit with the tested line magnetic field.

"The fitting degree is still around 99.9%... It seems that the model I built yesterday still has a high degree of restoration of this magnetic field."

After confirming this, Ning Chen operated in the software to apply the reverse magnetic field that simulated the magnetic field to the line.

Theoretically, such an operation can offset the original magnetic field in the line and make the superimposed magnetic field of the entire line zero, thereby avoiding the lattice distortion caused by excess K element.

Just after Ning Chen performed this operation, he saw that the resistance results measured by the instrument suddenly changed drastically.

"Academician Tao, the test sample has re-entered the strict superconducting state!"

A project team member keenly observed this change and spoke out loud.

After hearing this person's words, everyone turned their attention to the resistance testing instrument and confirmed this result.

Everyone knew what such a result meant, and the expressions on their faces became excited.

This means that the project team may have conquered the preparation process of wire strips containing K iron-based superconductors.

Because the superconducting critical temperature of K-containing iron-based superconductors is relatively high, such a breakthrough is of great application significance.

The key to achieving this breakthrough is Ning Chen's unconstrained experimental idea!

At this time, Ning Chen also knew what the current experimental phenomenon might mean.

However, Ning Chen still tried hard to suppress his excitement, continued the experiment, and measured more sets of data.

It wasn't until Ning Chen felt that the data measured in this experiment was enough that he turned off the three-dimensional Helmholtz coil and ended the experiment.

After the experiment, everyone first waited for the superconducting wire strip to cool down, and then checked the appearance of the superconducting wire strip.

Just by looking at it with the naked eye, everyone can see that the K-containing iron-based superconducting wire strip synthesized this time has some subtle differences from the previous one.

Of course, naked eye observation will have a large subjective factor, and it is impossible to determine the internal structure of the substance.

"Hurry up and get these wire strips tested. I want to see the results as soon as possible!"

Tao Wei is also rarely so excited, because once this result is confirmed, it will be regarded as a very eye-catching research result in the entire field of superconducting application research.

Ning Chen's performance this time once again refreshed Tao Wei's view of Ning Chen.

At Tao Wei's urging, the project team members immediately took these samples and prepared for XRD, scanning electron microscopy and other tests.

Ning Chen was also very concerned about the results of these tests and came to the testing center with everyone, waiting for the test results to be released.

After preliminary XRD testing, the phase analysis results of this substance came out first.

"According to the phase analysis results of It’s the same substance.”