Ferromagnetic and antiferromagnetic properties in layered structures (La0.6Nd0.4Mn2Si2)

• Ferromagnetic–antiferromagnetic interactions are studied in layer structures.
• Magnetization is measured at various temperatures at 50 Oe in La0.6Nd0.4Mn2Si2.
• A mean field model is considered to analyze the experimental data.
• Values of the critical exponent for the magnetization are deduced.
• Quadrupole–quadrupole interactions are dominant for La0.6Nd0.4Mn2Si2.

Temperature dependences of the magnetization (ferromagnetic) and the staggered magnetization (antiferromagnetic) are analyzed for various ferromagnetic (FM) and antiferromagnetic (AF) phases of the layered structure of La0.6Nd0.4Mn2Si2 using the experimental data at a constant magnetic field of 50 Oe. For this analysis, a mean field model with the quadratic coupling between the magnetization (FM) and the staggered magnetization (AF) is considered and the expressions derived from the mean field model for the magnetization and the staggered magnetization, are fitted to the experimental data.Our results indicate that the quadrupole–quadrupole interactions for the ferromagnetic and antiferromagnetic spin configurations play a dominant role to describe the ferromagnetic and antiferromagnetic properties of the layered structure of La0.6Nd0.4Mn2Si2.

Magnetization is measured as a function of temperature for the ferromagnetic (FM) and antiferromagnetic (AF) phases in La0.6Nd0.4Mn2Si2. Fig. 1 represents our measurements and the analysis.Figure optionsDownload as PowerPoint slide