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Related Experiment Video

Updated: May 30, 2026

Study of Protein Dynamics via Neutron Spin Echo Spectroscopy

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Published on: April 13, 2022

Anomalous shift of magnetic diffuse scattering studied by neutron diffraction.

K Prokeš¹, G H Lander, N Bernhoeft

¹Helmholtz Centre Berlin for Materials and Energy, SF-2, Glienicker Straße 100, 14109 Berlin, Germany.

Journal of Physics. Condensed Matter : an Institute of Physics Journal

|August 11, 2011

Summary

Neutron diffraction confirms a magnetic q-shift phenomenon in USb and MnF2, demonstrating it arises from the bulk material and is not exclusive to resonance X-ray scattering or actinide compounds.

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Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

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Published on: June 7, 2018

Area of Science:

Condensed Matter Physics
Materials Science
Magnetism

Background:

The magnetic q-shift, a discrepancy between magnetic and nuclear scattering positions, was previously observed using resonance X-ray scattering (RXS).
This phenomenon was initially studied in actinide systems and its origin (bulk vs. surface) and universality were unclear.

Purpose of the Study:

To investigate the magnetic q-shift phenomenon using neutron diffraction.
To determine if the q-shift is an artifact of RXS or a bulk effect.
To ascertain if the q-shift is specific to actinide compounds.

Main Methods:

Neutron diffraction experiments were conducted near the magnetic phase transitions of Uranium Antimonide (USb) and Manganese Difluoride (MnF2).
Analysis focused on the thermal evolution of magnetic diffuse scattering and nuclear Bragg reflections.

Main Results:

Neutron diffraction confirmed the existence of the magnetic q-shift in both USb and MnF2.
The results indicate the q-shift originates from the bulk of the sample, not just the surface.
The phenomenon was observed in a non-actinide compound (MnF2), showing its broader applicability.

Conclusions:

The magnetic q-shift is a genuine bulk phenomenon, not an artifact of RXS techniques.
This effect is not limited to actinide materials, extending to other magnetic systems.
Neutron diffraction provides a complementary method for studying the magnetic q-shift.