Ferrimagnetic Resonance in Gadolinium Iron Garnet

Journal Article · Sat Mar 01 04:00:00 EST 1958 · Journal of Applied Physics (U.S.)

DOI:https://doi.org/10.1063/1.1723167· OSTI ID:4332973

Calhoun, B A; Smith, W V; Overmeyer, J

Ferrimagnetic resonance in single crystals of gadolinium iron garnet has been observed at 9479 and 23 725 mc. Crystals from two different preparations have different compensation points (13° and 32°C). The resonance behavior is discussed in terms of a two sublattice theory. g_Gd is equal to 2.006 above -90°C and increases at lower temperatures. The gadolinium ions contribute to the anisotropy below -40°. An extra resonance observed near the compensation point is attributed to inclusions in the crystals. The gadolinium apparently contributes substantially to the total damping of the magnetization.

• Research Organization: I.B.M. Corp., Poughkeepsie, N.Y.
• NSA Number: NSA-12-008187
• OSTI ID: 4332973
• Journal Information: Journal of Applied Physics (U.S.), Journal Name: Journal of Applied Physics (U.S.) Vol. Vol: 29; ISSN JAPIA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALUMINUM SILICATES
ANISOTROPY
DEFECTS
FERROMAGNETIC MATERIALS
GADOLINIUM OXIDES
GARNETS
IMPURITIES
IRON OXIDES
LATTICES
MAGNETIC RESONANCE
MINERALS
PHYSICS
TEMPERATURE