Potential magnetic structure in Eu3InAs3 revealed by magnetization and thermodynamic study.

We systematically investigate the magnetization and thermodynamic responses associated with antiferromagnetic (AFM) transitions in single crystals of the magnetic semiconductor Eu3InAs3. The linear thermal expansion measurements around the AFM transition temperatures, TN1 and TN2, indicate an expansion along the a axis and contraction along the b and c axes. The calculated ∆V/V(T) shows a continuous change at TN, indicating a second-order magnetic phase transition.

Coupled magnetic-elastic and metal-insulator transition in epitaxially strained SrMnO/BaMnO superlattices.

The spin-phonon coupling and the effects of strain on the ground-state phases of artificial SrMnO/BaMnO superlattices were systematically investigated using first-principles calculations. The results confirm that this system has antiferromagnetic order and an intrinsic ferroelectric polarisation with the 4 space group. A tensile epitaxial strain can drive the ground state to another antiferromagnetic-ferroelectric phase and then to a ferromagnetic-ferroelectric phase with the 2 space group, accompanied by a change in the ferroelectric polarisation from an out-of-plane direction to an in-plane direction.

Effect of the itinerant electron density on the magnetization and Curie temperature of SrFeMoO ceramics.

The itinerant electron density () near the Fermi level has a close correlation with the physical properties of SrFeMoO. Two series of single-phase SrNa FeMoO ( = 0.1, 0.