Samarium–cobalt (SmCo) magnets belong to the category of rare-earth magnets and are composed of samarium (Sm), a rare-earth element, and cobalt (Co), a transition metal. They are among the strongest permanent magnets.

This series of samarium cobalt magnets is the first rare earth magnets used. Fairly strong, with a ratio of 1 samarium atom to 5 cobalt atoms, is the more “simple” of the 2. It can be machined before it is being magnetized and has very good corrosion resistance, so no coating is required. Also known as samarium 1:5 magnets.

These Samarium Cobalt magnet alloys are an age hardening type with a composition of two atoms of rare earth Samarium Cobalt and 13-17 atoms of transition metals (TM). The TM content is rich in cobalt, but contains other elements such as iron and copper.

Nov 27, 2024 · The formation and evolution of SmCo5/Sm2Co17 (1:5H/2:17R/H) cellular structures play an essential role in understanding the coercivity of Sm-Co magnets.

Nov 25, 2019 · Structural stability, magnetic properties and electronic structures of SmCo 4.5 M 0.5 alloys with doping elements of transition metals M = Ti, Zr, Hf, Mn and Cr were studied systematically based on the first-principles calculations and statistical thermodynamics.

Apr 16, 2024 · SmCo5 magnets are the first generation of samarium cobalt magnets. The numbers in the grade designation refer to the ratio of samarium to cobalt in the magnet composition. The 1:5 grades have one samarium atom coupled with five cobalt atoms.

Sep 22, 2023 · Scanning transmission electron microscopy confirms predominantly SmCo 5 phase formation and reveals nanoscale inhomogeneities in the Cu and Co distribution.

Feb 25, 2019 · SmCo 5 sintered magnets with good thermal stability are mainly used in high-temperature field. In this study, two types of SmCo z powders with different nominal z values were mixed and synthesized into SmCo 5 magnets by the traditional powder metallurgy method.

Feb 8, 2024 · Strategies for the Synthesis of Nanostructured SmCo 5 Magnetic Particles for Permanent Magnetic Application. Hard magnetic materials based on SmCo 5, known for their high coercivity, have found extensive applications in advanced technologies.

Samarium-cobalt magnets are divided into the SmCo 5, or SmCo Series 1:5, and the Sm 2 Co 17, or SmCo Series 2:17. Sm2Co17 properties and SmCo5 properties are as described in our samarium cobalt properties & grades datasheet: Samarium Cobalt Magnetic Characteristics. Samarium-Cobalt magnets are brittle and prone to cracking and chipping.