Magneto-Optical Properties of Rare Earth (III) Aluminum Garnets

Fabrication and performance optimization of the magneto-optical (Tb1−xRx)3Al5O12 (R = Y, Ce) transparent ceramics

“…The preparing procedure of the (Tb 0.997 Ce 0.003 ) 3 Al 5 O 12 (Ce-TAG) transparent ceramic samples was almost the same as that of the sample Y1 and Y2 except for sintering holding temperatures (1650 C and 1670 C) and holding time (18 h). The two obtained Ce-TAG transparent ceramic samples were named as S1 and S2, respectively.…”

“…1,2 A high Verdet constant, size scalability, a high laserinduced-damage threshold, and a high thermal conductivity are required for such material for high power laser applications. Terbium aluminum garnet (Tb 3 Al 5 O 12 (TAG)) single crystal is an excellent magneto-optical material with good transmittance in the 500-1500-nm region, 3,4 high thermal conductivity, and higher Verdet constant than the most commonly used terbium gallium garnet (Tb 3 Ga 5 O 12 (TGG)) single crystal. 5,6 All the above merits make TAG potentially useful for the visible and near-infrared applications.…”

“…Two-step sintering has been commonly used to obtain transparent ceramics with small grain sizes. [16][17][18] Typically, the above sintering process involves (1) first, heating the ceramic green body to a higher temperature in a short time, (2) then cooling it down to a lower temperature rapidly, (3) and then holding at the second temperature stage for a long time to achieve densification and meantime to keep the grains within relatively small size. In this paper, Y 3þ doped TAG transparent ceramic was also fabricated by using this method.…”

“…In this paper, Y 3þ doped TAG transparent ceramic was also fabricated by using this method. While the other (Tb 1Àx R x ) 3 Then after drying at 80 C for 48 h, the mixtures were uniaxially pressed into plates at 10 MPa and cold isostatically pressed at 200 MPa. The green bodies were pre-sintered in the air at 600 C for 3 h to remove the organic ingredients.…”

Preparation of (Tb0.8Y0.2)3Al5O12 transparent ceramic as novel magneto-optical isolator material

“…Today, the most commonly used Faraday magneto-optical material in the visible (VIS) and near-infrared (NIR) regions is the terbium gallium garnet (Tb 3 Ga 5 O 12 , TGG) single crystal [1,2] In fact, the terbium aluminum garnet (Tb 3 Al 5 O 12 , TAG) single crystal is much better choice for its large Verdet constant. [3,4] . However, the growth of TAG single crystals from the melt is extremely difficult because of the incongruent melting nature of TAG and its unstable phase [5] .…”