Lutetium (III) oxide

• CAS: 12032-20-1
• Catalog Number: ACM12032201-8
• Category: Main Products
• Molecular Weight: 397.93
• Molecular Formula: Lu2O3
• Synonyms: Cassiopeium oxide
• Density: 9.42 g/mL at 25 °C (lit.)
• Appearance: White powder
• Application: Lutetium oxide (Lu2O3), the oxide found in monazite ore, is a white solid. It is hygroscopic and also absorbs carbon dioxide, making it useful to remove CO2 in closed atmospheres.

Case Study

Lutetium Oxide-Based Thin Film Used to Prepare Mode-Locked Erbium-Doped Fiber Laser

Baharom, M. F., et al. Optics Communications, 2019, 446, 51-55.

A stable and compact mode-locked erbium-doped fiber laser (EDFL) operating at 1564 nm was prepared using a lutetium oxide (Lu2O3)-based thin film as a saturable absorber (SA). The EDFL has a pulse repetition rate of 0.97 MHz, a pulse width of 2.12 ps, a slope efficiency of 8.65% and a maximum pulse energy of 7.64 nJ.
Lutetium oxide film fabrication
· To create the Lu2O3 solution, 5 mg of Lu2O3 powder was dissolved in 50 ml of isopropyl alcohol (IPA) and stirred continuously for 5 minutes with a magnetic stirrer.
· The solution was then centrifuged for 6 hours using an ultrasonic bath machine, resulting in the supernatant with the Lu2O3 solution rising to the surface of the Lu2O3 residue. This solution was then transferred into a test tube for future use.
· Meanwhile, the PVA solution was made by dissolving 1 g of PVA powder in 120 ml of deionized (DI) water, stirring the mixture at 90°C for 30 minutes, and cooling it to room temperature.
· The previously prepared Lu2O3 solution was combined with the PVA solution, and the resulting mixture was ultrasonicated for 2 hours to create a uniform composite precursor solution. This solution was applied to a petri dish and allowed to dry at room temperature for 3 days, forming a Lu2O3 PVA composite film with a thickness of approximately 30 microns.

Preparation Strategy of Lutetium Oxide Continuous Fibers

Yongshuai, X. I. E., et al. Journal of Advanced Ceramics, 2023, 12(1), 24-35.

In order to obtain lutetium oxide (Lu2O3) continuous fibers with a diameter below 50 μm, this work developed a method to prepare Lu2O3 continuous fibers from Lu-containing precursors by dry spinning and heat treatment. The prepared flexible Lu2O3 continuous fiber has a diameter of 40μm, a tensile strength and elastic modulus of 373.23 MPa and 31.55 GPa respectively, and a temperature resistance of not less than 1300 ℃, which expands its application and development in high-energy lasers.
Preparation of Lu2O3 continuous fibers
· PALu is a Lu-acetylacetone coordination polymer with a ceramic yield of approximately 60%. Polymerization primarily depends on the interaction among hydroxyl groups.
· Lu2O3 continuous fiber preparation involves first dissolving the PALu precursor in absolute ethanol to create a spinning sol. This spinning sol is poured into a spinning tank, where it is degassed and pressurized before being extruded through a spinneret with 50 holes to form continuous fibers.
· The fibers are then cut into 20 cm sections for pretreatment in a hydrothermal kettle at about 0.5 MPa pressure for 30 minutes. The temperature is gradually increased in the subsequent heat treatment process until reaching the desired level for Lu2O3 continuous fiber production.
· The obtained sample is named PAWVT-A-B, where A and B are the pretreatment and heat treatment temperature, respectively.