HOLMIUM (III) OXIDE, Rare Earth,4N, 99.99%, 50, 100, 200, 500,1000 GRAMS For Sale

HOLMIUM (III) OXIDE, CERAMIC & GLASS SUPPLIES , 99.99%, 4N, 50, 100, 200, 500, 1000 GRAMS. Larger Quantity Available by Special Order, 5 KG and up.........
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Holmium(III) oxide, or holmium oxide is a chemical compound of a rare-earth element holmium and oxygen with the formula Ho2O3. Together with dysprosium(III) oxide (Dy2O3) holmium oxide is one of the most powerfully paramagnetic substances known. The oxide, also called holmia, occurs as a component of the related erbium oxide mineral called erbia. Typically the oxides of the trivalent lanthanides coexist in nature and separation of these components requires specialized methods. Holmium oxide is used in making specialty colored glasses. Glass containing holmium oxide and holmium oxide solutions have a series of sharp optical absorption peaks in the visible spectral range. They are therefore traditionally used as a convenient calibration standard for optical spectrophotometers.Holmium oxide has some fairly dramatic color changes depending on the lighting conditions. In daylight, it is a tannish yellow color. Under trichromatic light, it is a fiery orange red, almost indistinguishable from the way erbium oxide looks under this same lighting. This is related to the sharp emission bands of the phosphors. Holmium oxide has a wide band gap of 5.3 eV and thus should appear colorless. The yellow color originates from abundant lattice defects (such as oxygen vacancies) and is related to internal transitions at the Ho3+ ions.Holmium oxide is one of the colorants used for cubic zirconia and glass, providing yellow or red coloring. Glass containing holmium oxide and holmium oxide solutions (usually in perchloric acid) have sharp optical absorption peaks in the spectral range 200-900 nm. They are therefore used as a calibration standard for optical spectrophotometer and are available commercially. As most other oxides of rare-earth elements, holmium oxide is used as a specialty catalyst, phosphor and a laser material. Holmium laser operates at wavelength of about 2.08 micrometres, either in pulsed or continuous regime. This laser is eye safe and is used in medicine, LIDARs, wind velocity measurements and atmosphere Policy: Testing of raw materials should be an integral part of any process including ceramic or glass making /manufacturing. Upon receipt of any new material, we strongly recommendthat you test the material. \"Paul Brown Studio Arts and Supplies\" . has no control overeither the variations that may occur in the natural materials or theirapplication. All products are supplied as is from the manufacturer. No additional processing or technical support is supplied. Therefore, our products are sold with the understandingthat the user is solely responsible for determining suitability for anypurpose and the results obtained. There are no warranties expressed orimplied, regarding the user’s finished product or results. Policy: NO RETURNS