Structure magnetique de Mn3GaC

Symmetry analysis of magnetic structures on the microscopic and macroscopic methods of E.F. BERTAUT

“…Actually, a weak rhombohedral distortion of about 89.7 degrees was evidenced, occurring down to T AF , thus confirming the direction [111] as the easy axis of the antiferromagnetic magnetic structure [33].…”

“…It is antiferromagnetic (AF) below T AF ∼ 170 K, then ferromagnetic (F) up to T C ∼ 240 K, and finally paramagnetic at higher temperatures. Low temperature neutron diffraction patterns indicate the antiferromagnetic propagation vector k = ( ) [33]. The analysis of the reduction conditions of the (G) complete transformation matrix and the search of the corresponding eigenvectors leads to its decomposition into irreducible blocks such as:…”

X-ray Powder Diffraction Studies of Mn<SUB>3</SUB>Ga<SUB>0.97</SUB>Al<SUB>0.03</SUB>C in Magnetic Fields

“…This negative volume magnetostriction is consistent with the previous reports for Mn 3 Ga 1Àx Al x C with x ¼ 0, 0.03, and 0.05. 1,2,4,6) With further decreasing temperature, the shrinkage of a becomes less steep below T I{F . For T < 80 K, the lattice parameter a of the major AF phase is only shown in Fig.…”

“…1,2) According to the results of the neutron diffraction measurement, the magnetic moment of the Mn atom is 1.8 B at 4.2 K in the AF phase and 1.3 B at 193 K in the F phase.…”

Electronic structure and x-ray magnetic circular dichroism in the Mn3CuN perovskite

“…Ternary manganese compounds with a formula Mn 3 MX (M = Ga, Sn, Zn, Cu and X = C and N) and the cubic crystal structure of a perovskite type have attracted much interest due to the peculiar relationship between lattice and magnetism which leads to a large variety of magnetic orderings and structural transformations [1][2][3][4][5][6][7][8][9]. The control of magnetostructural correlations in a magnetic metal is extremely important in various advanced industrial applications.…”