Accession Number : ADA016918

Title :   Magnetic Properties of Single Crystal CuNi-18H and MgZn-18H Solid Solutions.

Descriptive Note : Technical rept.,


Personal Author(s) : Savage,R. O. ; Tauber,A. ; Shappirio,J. R.

Report Date : NOV 1975

Pagination or Media Count : 8

Abstract : Hexagonal ferrites have been under investigation at this laboratory for several years as both potential narrow and broad ferrimagnetic resonance linewidth materials for several device applications at microwave and millimeter wave frequencies. Recently a new 18-layer structure Ba5Me2Ti3Fe12O31 where Me=Zn, Mg, Co, and Cu was discovered and several compositions have been investigated. In this paper the magnetic properties of two solid solutions MgZn-18H and CuNI-18H have been investigated as a function of temperature. The CuNi system is of interest for two reasons: Attempts to obtain end member Ni containing crystals have been unsuccessful and Ni containing hexagonal ferrites exhibit small temperature coefficients of magnetization. The latter is an important property for device applications. The second reason relates to the influence of Cu(2+) ions in creating uniaxial anisotropy.

Descriptors :   *Barium ferrites, *Solid solutions, *Magnetic materials, Copper compounds, Nickel compounds, Magnesium compounds, Zinc compounds, Magnetic properties, Microwave equipment

Subject Categories : Electricity and Magnetism
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE