Effect of magnetic field on the magnetic excitation spectrum in the magnetocaloric compound Mn5Si3
The aim of the proposal is to study the effect of an applied magnetic field on the magnetic excitation spectrum of the magnetocaloric compound Mn5Si3. In a previous study performed at zero magnetic field, we evidenced a markedly distinct spin dynamics between the two antiferromagnetic phases AF1 (TN1=66K) and AF2 (TN2=99K) of Mn5Si3. In particular, the higher temperature phase AF2 exhibits coexistence of diffuse spin fluctuations and well-defined spin-waves. Since the AF1 and AF2 states are associated with direct and inverse magnetocaloric effect, respectively, the proposed experiment is crucial for revealing fundamental microscopic mechanisms associated with the magnetocaloric effect.
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BINISKOS Nikolaos; AIT HADDOUCH Mohammed; RAYMOND Stephane; SCHMALZL Karin and STEFFENS Paul. (2018). Effect of magnetic field on the magnetic excitation spectrum in the magnetocaloric compound Mn5Si3. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-01-1580
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