| ID | 141890 |
| Title Proper | Sol freeze dry nd |
| Other Title Information | yag nanopowder synthesis and sinterability studies |
| Language | ENG |
| Author | Mann, Rekha ; Laishram, Kiranmala ; Ahmed, Sheikh Ashfaq ; Malhan, Neelam |
| Summary / Abstract (Note) | Citrate nitrate sol freeze dry synthesis of 2 atomic % neodymium ion doped Yttrium Aluminium Oxide (Nd:YAG) nanopowders was explored for the first time. Sol was prepared by dissolving nitrates of Al3+, Y3+ and Nd3+ keeping molar ratio to be 5: 2.94: 0.06. Total metal ion to citric acid ratio was optimised at 1 is to 0.25. Sol was freeze dried at -80 °C for 48 h. Dried mass thus obtained was calcined at 1000 °C for 2 h to give phase pure Nd:YAG as characterised by FTIR and XRD. Particles were in the size range of 35 nm - 50 nm with close to spherical morphology as observed by TEM. Nanopowder was compacted and sintered at 1700 °C for 5 h under 10-6 mbar followed by hot isostatic press at 1750 °C for 4 h under 200 MPa, to give 71 per cent transmission at 1064 nm indicating synthesis of well sinterable Nd:YAG nanopowders. |
| `In' analytical Note | Defence Science Journal Vol. 65, No.5; Sep 2015: p.418-422 |
| Journal Source | Defence Science Journal 2015-10 65, 5 |
| Key Words | Hip ; Freeze Dry ; Nd ; Yag ; Transparent Ceramic ; Vacuum Sintering ; Yag Nanopowder ; Sinterability |