(949) 407-8904 Mon - Fri 08:00 - 17:00 23661 Birtcher Dr., Lake Forest, California, USA
(949) 407-8904 Mon - Fri 08:00 - 17:00 23661 Birtcher Dr., Lake Forest, California, USA
Rare Earth Element Dysprosium - An Overview

Dysprosium is a rare-earth element with a lustrous and silvery appearance. Like most other rare-earth metals, it belongs to the Lanthanide series. Its name was derived from the Greek word dysprositos which can be translated as hard to get. Dysprosium was discovered in 1886 by a scientist known as Paul Emile Lecoq de Boisbaudran. However, it was not until 1905 that Georges Urbain first isolated it.

Dysprosium
Dysprosium – Element

This rare-earth element has seven isotopes. The isotopes have a mass number of 154, 156, 158, 160, 161, 162, 163, and 164. However, the most abundant isotope has a mass number of 164 and is represented as 164Dy, while the least abundant isotope has a mass number of 156 and is represented as 156Dy.

China produces a good ninety-nine percent of all dysprosium produced every year. Other countries that produce dysprosium include the USA, Australia, Russia, and India. It is most commonly obtained from monazite sand. It can also be obtained from gadolinite, euxenite, polycrase, and fergusonite. Ion exchange and floatation processes are used to isolate dysprosium.

Properties

Dysprosium has similar properties with some rare-earth elements. These properties are responsible for its classification as a rare-earth element. However, it also has some properties that differentiate it from other rare-earth elements and make it unique.

Like other elements, its periodicity is responsible for its properties. In the periodic table, dysprosium belongs to period 6, f-block. Also, it is solid at room temperature. Its melting point is 1680 K, and its boiling point is 2840 K.

It has a hexagonal and closely packed lattice system. It also has a very high magnetic strength. It is ferromagnetic under 87K- 90K, antiferromagnetic above 87-90 K, and paramagnetic at about 179K.

Fig. 1
Dysprosium Structure. Image Source: sciencedirect.com

Its standard atomic weight is 162.5. Like most metals, its density varies with its state. When it is solid, its density is 8.54 g/cm3. However, when it is liquid, its density decreases to 8.37 g/cm3. Dysprosium is electropositive, and its oxidation state is +3. As regards its chemical properties, it tarnishes slowly in a humid atmosphere, it is highly reactive with halogens at temperatures above 473 K, and it is easily soluble in H2SO4.

Applications

Dysprosium is usually used in combination with other metals because it is difficult to isolate. What are the uses of dysprosium in the world today, and how do its various properties make it suitable for these uses?

Permanent Magnets

This is one of the most common applications of dysprosium. Dysprosium cannot be demagnetized at very high temperatures. This particular property makes it an excellent permanent magnet.  The permanent magnets formed from dysprosium alloys can be used to manufacture electric cars and wind turbines generators.

Wind Turbine Application
Wind Turbine Application

Nuclear Reactors

Dysprosium is used in the manufacture of control rods used for nuclear reactors. This is because dysprosium can absorb many neutrons without undergoing fission. This property of dysprosium is its high neutron capture cross-section.

Data-storage Devices

Data storage devices such as hard disks, floppy disks, compact disks, and flash drives can be produced with dysprosium alloys.

Thin-Film Coating

Dysprosium sputtering targets and dysprosium evaporation materials are used in deposition processes including semiconductor deposition, chemical vapor deposition (CVD) and physical vapor deposition (PVD).

Ships

Dysprosium alloys can be used in ships’ sound navigation and ranging systems due to their magnetic property. Hence, dysprosium is relevant in the marine industry.

Magnetic Refrigerators

As mentioned earlier, dysprosium is paramagnetic at specific temperatures. This particular property makes it an ideal component of magnetic refrigerators. Magnetic refrigerators can reach very low temperatures.

Laser Devices

An alloy of vanadium and dysprosium can be used in making laser devices. Laser devices can be used in laser cutting, law enforcement, medicine, printers, and even communication.

Infrared Radiation

Alloys of dysprosium can be employed in infrared devices. Infrared devices can be used for night vision, astronomy, weather forecasting, communication, and even medicine.

Corrosion Resistance

Magnets made with dysprosium are more resistant to corrosion than most of their other counterparts. It is for this reason that it is sometimes used in place of Neodymium in the production of magnets.

Reinforcement

When dysprosium is used to manufacture nanofibers, these nanofibers are very strong. These nanofibers can, in turn, be used to reinforce other products.

Dosimeters

Dysprosium is used in the manufacture of dosimeters. A dosimeter is a device that is used to measure ionizing radiation.

Conclusion

Dysprosium is indeed hard to get. This makes it quite expensive compared to other rare-earth metals. However, its numerous uses make it a highly sought-after rare-earth element. It is needed in the marine, automobile, biomedical, and telecommunication industries, to name a few. In terms of toxicity, keep in mind that soluble dysprosium salts are slightly toxic when taken orally, but solid dysprosium is not toxic.

If you want to know more about rare earth elements, we would like to advise you to visit Stanford Advanced Materials (SAM) for more information.

About the author

Julissa Green graduated from the University of Texas studying applied chemistry. She started her journalism life as a chemistry specialist in Stanford Advanced Materials (SAM) since 2016 and she has been fascinated by this fast growing industry ever since. If you have any particular topics of interest, or you have any questions, you can reach her at julissa@samaterials.com.

Leave a Reply

About Us

Stanford Advanced Materials (SAM) Corporation is a global supplier of various sputtering targets such as metals, alloys, oxides, ceramic materials. It was first established in 1994 to begin supplying high-quality rare-earth products to assist our customers in the research and development (R&D) fields.

May 2022
M T W T F S S
« Apr    
 1
2345678
9101112131415
16171819202122
23242526272829
3031