Editorial Feature

Erbium Oxide (Er2O3) Nanoparticles - Properties, Applications

Nanoparticles research is quickly advancing due to their unique properties, such as having increased electrical conductivity, toughness and ductility, increasing the hardness and strength of metals and alloys, luminescent efficiency of semiconductors, and formability of ceramics.

This article discusses the properties and applications of erbium oxide nanoparticles. Erbium is a Block F, Period 6 element, while oxygen is a Block P, Period 2 element.

Erbium oxide possesses excellent electrical, optical and photoluminescence properties. Erbium oxide nanoparticles appear in pink powder form. They are graded as irritants, and can cause serious eye irritation. These particles are insoluble in water, and moderately soluble in strong mineral acids.

Chemical Properties

The chemical properties of erbium oxide nanoparticles are outlined in the following table.

Chemical Data
Chemical symbol Er2O3
CAS No. 12061-16-4
Group Erbium 3
Oxygen 16
Electronic configuration Erbium [Xe]4f12 6s2
Oxygen [He] 2s2 2p4
Chemical Composition
Element Content (%)
Erbium 87.43
Oxygen 12.53

Physical Properties

The physical properties of erbium oxide nanoparticles are given in the following table.

Properties Metric Imperial
Density 8.64 g/cm3 0.312 lb/in3
Molar mass 382.56 g/mol -

Thermal Properties

The thermal properties of erbium oxide nanoparticles are provided in the table below.

Properties Metric Imperial
Melting point 2,344°C 4,251°F
Boiling point 3,290°C 5,954°F


The key applications of erbium oxide nanoparticles are as follows:

  • Can be dispersed in glass or plastic for display purposes, such as display monitors
  • Can be surface modified for distribution into aqueous and non-aqueous media for bioimaging
  • High-temperature corrosion-resistant coatings
  • Dopants for optical fiber and laser materials
  • Tuned insulator for Josephson junctions
  • In up-conversion material, capacitors, and metal-oxide-semiconductor transistors

Source: AZoNano

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