Site occupancy and magnetic study of Al3+ and Cr3+ co-substituted Y3Fe5O12

CO-precipitation synthesis of iron-containing garnets Y3Al5−Fe O12 and their magnetic properties

“…These materials exhibit different physical-chemical properties because of their different atom coordination [3]. Because the Fe 3 þ ion is similar to the Al 3 þ ion in size, the former can easily displace the diamagnetic Al 3 þ ions as the center ion of the tetrahedrons (a) and octahedrons (d); therefore their magnetic characteristics are different [8][9][10][11]. It is unknown whether the iron-containing garnet is a YAG-YIG complex mixture or a Y 3 Al 5 À x Fe x O 12 solid solution.…”

Phase and magnetic properties evolutions of Y3−x(CaZr)xFe5−xO12 by the sol–gel method

“…As is well known, the conventional solid state reaction method for preparation of YIG powders from oxides often requires prolonged grinding and high temperature calcinations (usually above 1300°C), and yields large particles with broad size distribution [2][3][4][5]. YFeO 3 and Fe 2 O 3 are produced as intermediates and these phases remain as impurities unless heated to high temperatures.…”

First principles study of structure, electronic and optical properties of Y3Fe5O12 in cubic and trigonal phases

“…The crystal of YIG is described in the trigonal phase (space group R-3) [4] and cubic phase (space group Ia-3d) [5]. Recently, several works on improving the magnetic and electrical properties of YIG have been reported in the open literature [6][7][8][9][10][11][12][13][14]. K. Bouziane et al [6] prepared Y 3 Fe 5−2x Al x Cr x O 12 samples by ceramic technique and found that the Fe 3+ at 16a positions (octahedral sites) was substituted by Cr 3+ , while the Fe 3+ at 24d positions (tetrahedral sites) was replaced by Al 3+ .…”

“…Recently, several works on improving the magnetic and electrical properties of YIG have been reported in the open literature [6][7][8][9][10][11][12][13][14]. K. Bouziane et al [6] prepared Y 3 Fe 5−2x Al x Cr x O 12 samples by ceramic technique and found that the Fe 3+ at 16a positions (octahedral sites) was substituted by Cr 3+ , while the Fe 3+ at 24d positions (tetrahedral sites) was replaced by Al 3+ . W. Zhong et al [7] reported a novel cathode material, Y 2.5 Ca 0.5 Fe 5 O 12 , which was used for intermediate temperature solid oxide fuel cells.…”