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Liquid helium can reach lower temperatures than liquid nitrogen.

Under the premise that the superconducting critical temperature of the substance is not yet known, using liquid helium as a coolant is definitely a safer way.

And Xu You seems to be very sure about the superconducting critical temperature of matter, so he directly gave up liquid helium as a coolant.

"No need, the new type of iron does not need such a low temperature to achieve superconductivity. If it is not necessary, there is no need to waste more expensive coolant." Xu You laughed.

"Okay, teacher."

Although normally speaking, when the nature of matter is not clear, one should be fully prepared.

However, since Xu You had already said so, Lin Shi would not have any doubts.

Lin Shi didn't know why Xu You had such confidence in his judgment.

But over the years, Lin Shi didn't understand much about Xu You. Lin Shi felt that this might be the gap between ordinary people and geniuses.

The other material experts present were curiously observing the progress of the experiment.

They all know that Xu You's attainments in the field of superconductivity are second to none in the world, and Xu You also won China's first Nobel Prize in Physics for his research in this field.

However, they did not dare to believe that Xu You could accurately determine the superconducting critical temperature of the new type of iron before successfully purifying the new type of iron.

After a brief exchange, Xu You and Lin Shi continued to carry out their experiments as if no one else was around.

The task of lowering the temperature seems simple, but to lower the temperature quickly and accurately, just like a chef's control over the heat, it cannot be achieved overnight.

As early as when Xu You had not yet become a formal student of Jijing University, he began to practice these operations.

It is precisely because of thousands of times of experience that Xu You can control the temperature drop so proficiently and accurately.

Although Lin Shi was somewhat different from Xu You in terms of ability, he was no less than Xu You in terms of hard work.

"Lin Shi, we are about to reach the critical temperature of superconductivity, we need to slow down."

"Okay, teacher."

Xu You realized that the temperature at this time was very close to the superconducting critical temperature of the new type of iron, so he hurriedly slowed down the cooling speed.

Even if Xu You is very sure about his simulation, there may still be some errors.

at this time.

Xu You and Lin Shi saw at the same time that the current data on the test instrument had undergone a huge change.

Such a huge change can explain that the resistance of the metal material has reached a very small value.

Because in the substance to be measured, there are other impurities besides the new type of iron, which makes the whole material not a strict superconducting material.

But such a change is enough to prove that Xu You's prediction is completely fine.

"Teacher, your prediction is right!"

Seeing such an experimental phenomenon, Lin Shi couldn't help blurting out excitedly.

At this time, Lin Shi still couldn't figure out how Xu You successfully predicted the superconducting critical temperature of the new type of iron.

For Xu You, Lin Shi only has infinite admiration.

On the other hand, Xu You did not experience any mood swings because of his accurate prediction, and continued to calmly say:

"Lin Shi, prepare to apply an external magnetic field to separate matter."

"Okay, teacher."

Next, Xu You and Lin Shi Xu You performed their duties and carefully carried out the experiment.

Xu You is responsible for temperature control, so that the material can always be kept within the range of superconducting critical temperature.

Lin Shi, on the other hand, adjusted the external magnetic field to separate the new type of iron from other iron oxides.

Under the support of a strong magnetic field and a superconducting state, Xu You and Lin Shi finally completed the separation of matter.

After completing the separation experiment, Xu You carefully collected the new iron powder and observed their structure under a microscope.

"Well, after purification, the purity of the new type of iron has almost reached 100%. This new type of iron is really a special substance. Until now, I don't know how it was formed."

Looking at the microstructure of the new iron in the screen, Xu You expressed his doubts.

But compared to Xu You's doubts, the doubts in other people's hearts are far more numerous.

Seeing the image on the screen, the material experts present were convinced that Xu You had indeed completed the purification of the new type of iron.

Many of them saw Xu You's experiment process for the first time, and they couldn't help expressing their sincere admiration for Xu You.

"Professor Xu, you are really amazing! Before doing the experiment, you were able to predict the results of the experiment so accurately. Compared with you, our gap is really too big."

Xu You shook his head when he heard the words, and said, "Don't say that, when I usually do experiments, I have experienced countless failures. It is because of these failures that I have gradually accumulated successful experience."

Xu You didn't want to let himself be in other people's hearts, just an image of a genius who would never fail.

Xu You knows that although he has the blessing of the system, the time and effort he actually put in is several times or dozens of times that of others.

Xu You felt that this kind of perseverance and perseverance was more precious.

After a pause, Xu You continued:

"Also, the success of this experiment is also inseparable from the contribution of Teacher Lin Shi. Without her several important suggestions, we may not have found the direction to solve the problem."

Being named and praised by Xu You in public, Lin Shi was somewhat flattered.

Xu You deliberately praised Lin Shi in front of everyone. Apart from praising himself, he really wanted to improve Lin Shi's status in everyone's mind.

This girl really deserves more attention from everyone.

After completing the purification of the new type of iron, Xu You carefully collected the powder of the new type of iron to prepare for the next experiment.

Because of the limited amount of ore, Xu You only purified 100 grams of new iron element in the first experiment.

However, such a quantity is considered a luxury for some basic research.

Xu You immediately called everyone together to plan the next research work.

"Then let's talk about my personal thoughts first."

This time, Xu You did not act too modestly, and he did his part to put the dominance in his own hands.

Naturally, everyone did not have any opinion on this, and quietly waited for Xu You's next speech.

"Because the current amount of new-type iron is very limited, I suggest doing a comprehensive study on the properties of the new-type iron first. In order to improve the efficiency of the research, each of us has his own task. In the next period of time, we will be very Hard."