Heat capacity, resistivity, and angular dependent magnetization studies of single crystalNd1+∊Fe4B4 for ∊≈[formula presented]

B. S. Conner, M. A. Susner, P. Lampen-Kelley, A. F. May, M. A. McGuire, J. Q. Yan, B. C. Sales

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Advances in crystal growth have allowed for synthesis of large single crystals of Nd1+∊Fe4B4, a well-known phase with a modulated structure. As a result we are able to report heat capacity and resistivity measurements on a single crystal Nd1+∊Fe4B4 sample with a distribution of ∊ that skews towards the solubility limit of Nd near ∊≈[formula-presented]. Heat capacity measurements show evidence of crystal field splitting at temperatures higher than the long-range ferromagnetic Curie temperature. Heat capacity, resistivity, and magnetization measurements all confirm a Curie temperature of 7 K which is lower than previously reported values in the Nd1+∊Fe4B4 system. We also perform measurements of the angular dependence of the magnetization and discover behavior associated with the magnetic anisotropy that is inconsistent with the simple description previously proposed.

Original languageEnglish
Pages (from-to)100-106
Number of pages7
JournalJournal of Magnetism and Magnetic Materials
Volume435
DOIs
StatePublished - Aug 1 2017

Funding

Research sponsored by the Critical Materials Institute, an Energy Innovation Hub funded by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office (B.S.C., B.C.S.) and the Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division (M.A.S, P.J.K., A.F.M., M.A.M., J.Q.Y.).

Keywords

  • Crystal fields
  • Heat capacity
  • Magnetic anisotropy
  • NdFeB
  • Resistivity

Fingerprint

Dive into the research topics of 'Heat capacity, resistivity, and angular dependent magnetization studies of single crystalNd1+∊Fe4B4 for ∊≈[formula presented]'. Together they form a unique fingerprint.

Cite this