Service-Hotline: +43-1-2936882   Visit us on facebook      

A leading supplier for high purity elements, periodic table display samples for research, education and collection - Living science...
   Home | About us | About the Elements | Terms/conditions | References | Sponsoring |Guestbook | Contact | Deutsch

Compounds
All our compounds



Here you find important compounds for laboratory, hobby & collection. Because of technical reasons we can not show all of the compounds we sell. Just ask us for any material, we will send you the best offer.

Views: 886694



  entries 1 to 8 from 11 Gallery view   periodic table

  Categories:  
  ampoules     sealed vials     spheres     powder     Crystals     Compounds  
  All categories  

 Holmium(III)-Oxide 99,99% - Ho2O3 - 10.0 grams  Art. Nr. 003755  
Holmium(III)-Oxide 99,99% - Ho2O3 - 10.0 grams
magnify Click to zoom!

Holmium(III)-Oxide 99,99% - Ho2O3 - 10.0 grams

Holmium(III) oxid, oder Holmiumoxid ist eine chemische Verbindung des Seltenerdmetalls Holmium und Sauerstoff mit der Formel Ho2O3. Zusammen mit Dysprosium(III)-oxid (Dy2O3) ist es eines 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.

Amount: 10,0g
Purity : 99.99%
Packing: Glass vial
19.00
- tax free
5-9 pcs.: 18.00 Euro
>9 pcs.: 17.00 Euro
Availability: 71 in stock

All pictures are copyright protected and may not be used without our permission!

Request information
Amount:
 

 

smart-elements.com - Last software update from 17.11.2018 - All rights reserved
Idea, Design & Programming © by Juergen Bauer - All rights reserved