CONTRACT 195/2017

Investigation of the Phase Diagram of Selected Materials using μSR and μSR under Pressure.


Aim of the project (project summary and referee report).:
The aim of this work is to investigate the magnetic properties of selected compounds using, among traditional techniques, µSR and µSR under pressure. In a µSR experiment, a 100 % polarized muon (spin 1/2 elementary particles) beam is implanted into the investigated sample where they stop in interstitial crystallographic positions and their spin performs Larmor precession around the local field at the place where they come at rest. Muons disintegrate with a lifetime of 2.2 µs, emitting a positron preferentially along the muon spin at the moment of disintegration. By registering, with detectors placed around the sample, the spatial distribution of the emitted positrons, one can obtain valuable information about the value of the local field, field distribution and field dynamics.

Expected results:

The proposed research topics are of high interest in both fundamental (investigate the peculiarities of the phase diagram of the selected compounds and correlate them with the theoretical predictions) and applied physics. As said, the methods will be the combination μSR-pressure, together with classical macroscopic methods and X-Ray diffraction. Below, the list of principal expected results of this project is presented. 

Here you have information about the team involved in the project (from the beginning of the project) and an up to date version of the scientific report (updated regularly).

Financing agency:
Executive unit for financing higher education, research, development and inovation (UEFISCDI), through the  P4 program (fundamental and frontier research): exploratory research programs (PCE).

The μSR method.
Introduction to muon spin rotation and relaxation

ISIS Muon Spectroscopy Training School 2010

Partial results (publications, ...):
1. Unconventional magnetic order in the conical state of MnSi
Suppression of charge and antiferromagnetic ordering in Ga-DOPED La0.4Ca0.6MnO3
3. New insights into the magnetic textures of MnSi, 
Journees de la matiere condensee, 27-31 August, Grenoble, France

Last revised 17.09.18