Search for New Rare Earth Based Permanent Magnetic Materials

TitleSearch for New Rare Earth Based Permanent Magnetic Materials
Publication TypeBook Chapter
Year of Publication2012
AuthorsJensen B, Dennis KW, McCallum RW
EditorSalazarVillalpando MD, Neelameggham NR, Guillen DP, Pati S, Krumdick GK
Book TitleEnergy Technology 2012: Carbon Dioxide Management and Other Technologies
CityChichester
PublisherJohn Wiley & Sons
Pages247-253
Chapter247-253
ISBN Number978-1-11829-138-2
Accession NumberWOS:000322799600030
KeywordsCR, nd, New Material, Permanent Magnet, rare earth, zr
Abstract

There are substantial challenges in the exploration of magnetic materials in the R-TM-X system (R = rare earth, TM = transition metal, X = stabilizing element) where X is an element which has high vapor pressure, high reactivity, toxicity, or a refractory nature. This research focuses on discovering new phases with high anisotropy and high magnetization through closed diffusion couples inside high purity Fe crucibles. Either vapor-solid reactions or powder metallurgy techniques are then employed to isolate a stoichiometric sample based on a potentially magnetic phase found in the diffusion couple. For this research, X = F, Ca, Sr, Se, Zn, Bi or Cd, TM = Fe, and R = Nd. New ternary phases have been discovered with WDS and EDS, and magnetic transition temperatures have been measured with a SQUID magnetometer and VSM.

URL<Go to ISI>://WOS:000322799600030
DOI10.1002/9781118365038.ch30