# Chromium vacancies raise spin-wave frequency but increase energy loss

_Published Tuesday, November 10, 2026 at 11:40 AM EST · Science · Latest · Tier 2 — Notable_

![Chromium vacancies raise spin-wave frequency but increase energy loss — Primary](https://scx2.b-cdn.net/gfx/news/hires/2026/quasiparticle.jpg)

Researchers increased spin-wave frequency from 37 to 194 GHz under a magnetic field of 1 Tesla by changing chromium vacancy concentrations in a layered magnetic material. The laboratory study, published in Newton, compared two Cr₂₋δTe₂ crystals using ultrafast spectroscopy. At 7 Tesla, the frequency reached 352 GHz.

Spin waves can carry information without moving electric charge. Increasing vacancies shifted the material's magnetic behavior from quasi-three-dimensional to quasi-two-dimensional, with stronger magnetic anisotropy driving the frequency increase.

The gain came with stronger damping: the waves lost energy faster. Weaker coupling between layers also restricted propagation, making the waves more localized.

## Sources

- [Phys.org](https://phys.org/news/2026-11-magnetic-dimensionality-boosts-frequency-crte.html)

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Canonical: https://techandbusiness.org/newswire/fkcGwbQk0aZ0STG-VAlnwy
Published: 2026-11-10T16:40:23.323Z
Story chronology: 2026-11-10T16:00:05.000Z
Retrieved: 2026-11-10T19:08:39.356Z
Publisher: Tech & Business (techandbusiness.org)