# Ultrafast light can control ferromagnetism without relying on heating

- Source: Phys.org
- Published: 2026-10-21T17:40:04+00:00
- Category: Science
- Original: https://phys.org/news/2026-10-ultrafast-ferromagnetism.html
- Canonical: https://groundlevelnews.com/story/ultrafast-light-can-control-ferromagnetism-without-relying-on-heating-9703ae/

Despite being known for more mundane uses such as sticking notes to refrigerators or keeping bags shut, magnetization is one of the most fundamental and useful properties of a material. Indeed, it forms the physical basis for storing most of our digital information, encoding the bits used in hard drives, computer memories and credit cards.

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