The invisible enabler of the AI‑powered era! This material underpins the robust computational performance of AI servers.

When ChatGPT generates copy in seconds, large-scale models perform data analysis at the scale of hundreds of billions of parameters, and autonomous driving systems make decisions in milliseconds… At the heart of this strategy lies the high‑speed operation of AI servers. As the core platform for AI computing power, AI servers demand exceptionally stringent performance in power efficiency, size management, and electromagnetic interference resistance—requirements that hinge on a critical material “hidden in the shadows”— Amorphous Nanocrystalline soft magnetic material 。

It may not command the same level of attention as chips or GPUs, but thanks to its outstanding magnetic performance, it has become a key enabler for AI servers to achieve high power and high efficiency, At the heart of miniaturization, it quietly serves as the hard‑core “behind‑the‑scenes enabler” in an era of soaring computing power.

The exquisite design of the microstructure, to make; to create; to build Just High Performance soft magnetic materials

Amorphous and nanocrystalline soft magnetic materials are collectively referred to as two classes of high-performance magnetic materials. Their core advantage stems from a departure from conventional atomic‑arrangement designs, making them specifically tailored for high‑frequency applications.

✅ Amorphous soft magnetic material ：

Also known as “metallic glass,” it is produced by ultra‑rapid cooling, which “freezes” the atoms of molten metal in place, yielding an amorphous structure devoid of grain boundaries and dislocations. It exhibits extremely low coercivity and exceptionally high… Initial permeability ， The high-frequency loss is only 1/3 to 1/5 of that of conventional silicon steel sheets. , is the ideal choice for high-frequency power electronic devices.

✅ Nanocrystalline soft magnetic material ：

An “upgraded” version of amorphous materials, which, after precisely temperature-controlled annealing, develops a dual-phase microstructure consisting of “nanocrystalline grains + residual amorphous matrix,” thereby retaining low-loss characteristics while also exhibiting high… Saturation magnetic flux density , it exhibits lower high-frequency losses and superior temperature stability as well as enhanced resistance to DC bias. Perfectly suited to the extreme operating conditions of AI servers 。

Powerfully addressing industry pain points, it has become the “standard configuration” for AI servers.

As the demand for computing power in large-scale models surges, AI servers are moving toward… High power density 、 Efficient rate, High reliability As the “three highs” trend continues to evolve, traditional soft magnetic materials can no longer keep pace: silicon steel suffers from high eddy‑current losses and excessive heating at high frequencies, while conventional ferrites exhibit low permeability and poor saturation resistance, both of which have become bottlenecks in scaling computing power. The emergence of amorphous and nanocrystalline soft magnetic materials has effectively addressed these challenges, permeating key components of AI servers across multiple domains; among them, two core application areas stand out as particularly critical.

📌 Power Module: The “Energy Heart” of AI Servers

Today, the mainstream power of AI servers has reached 5.5 kilowatts, and in the future, it will further increase to 8 kilowatts and even 12 kilowatts, posing challenges to… High-efficiency power conversion The requirements for switching and miniaturization are extremely stringent.

Amorphous and nanocrystalline soft magnetic materials in PFC inductor, multi-phase DC-DC buck inductor, high-frequency isolation transformer It plays an irreplaceable role, effectively reducing energy losses and accommodating high‑current, high‑transient demands. Transformer losses are reduced by 60%–80% compared with conventional silicon steel. , and can also significantly reduce the volume. For example Delta A 5.5 kW power module, leveraging amorphous materials, achieves a power density of 56 W/in³, laying the groundwork for breakthroughs in AI servers toward “small form factor, high power.”

📌 EMC Filtering System: The “Anti-Interference Guardian” of AI Servers

AI servers feature densely packed internal chips and graphics cards, and high-frequency signal transmission can easily generate electromagnetic interference, compromising the stability of device operation. Amorphous and nanocrystalline materials, with their high permeability and wide‑band impedance characteristics, It can cover the 150 kHz–30 MHz interference band, with an insertion loss improvement of 15 dB. , which eliminates the need for a three-stage filter circuit, effectively suppresses interference, and meets international compliance requirements.

Among them, Co-based amorphous alloys are well suited for high-frequency noise suppression, while nanocrystalline magnetic cores offer superior temperature stability. It has been mass‑applied in the common-mode inductors of Huawei’s Ascend AI servers. 。

Technology continues to evolve, with limitless potential for future development.

As large AI models evolve toward larger parameter counts and greater computational power, the power density of AI servers will continue to rise, placing increasingly stringent demands on soft magnetic materials.

In the future, machine-learning–assisted alloy design will drive Mass production of amorphous alloys with high saturation magnetic induction. , further reducing the size of power modules; the development of novel materials such as amorphous/nanocrystalline composite cores and bulk metallic glasses will enable applications at higher power levels and frequencies while lowering production costs. The global amorphous and nanocrystalline soft magnetic materials market is projected to reach US$1.529 billion by 2031. , demand in the AI server sector will become one of the core growth drivers.

From home appliances and automobiles to photovoltaic energy storage, and now to AI servers, the application scope of amorphous and nanocrystalline soft magnetic materials continues to expand. As a company that has been deeply rooted in the industry for 15 years, Jiayou Amorphous remains committed to technological innovation and practical industrial implementation, meticulously refining its products and growing hand-in-hand with numerous customers, thereby injecting “magnetic momentum” into the development of diverse sectors.

We may never directly see what amorphous‑nanocrystalline soft magnetic materials look like, yet their quiet support underpins every rapid response from AI models and every stable operation of intelligent computing centers. Serving as a vital bridge between materials science and AI computing power, this “unsung hero” of the computing era is continually pushing the performance limits of AI servers, safeguarding the rapid growth of the digital economy.