Magnetic properties of neodymium-small rare earth gallium garnets with the rare earth ions on two crystallographic sites
1972; Elsevier BV; Volume: 5; Issue: 1 Linguagem: Inglês
10.1016/0022-4596(72)90014-x
ISSN1095-726X
AutoresLawrence Suchow, Milan R. Kokta,
Tópico(s)Quantum optics and atomic interactions
ResumoGarnets of the type {Nd3−yRy}[RxGa2−x](Ga3)O12, in which R is Yb, Tm, Er, Ho, or Dy, and x is as high as 2, have been subjected to magnetic measurements. All preparations have been studied over the temperature range 78–300°K and some also at 4.2°K and/or over the range 1.6–300°K. The materials are paramagnetic with Curie-Weiss behavior, but in some the slopes of 1χM vs. T plots change at very low temperature. Comparisons are made between experimental Curie constants and those calculated from theoretical values and from values obtained with garnets containing the same rare earth ions on only one or the other of the two crystallographic sites. Over the temperature ranges in which the various materials were studied, no evidence has been found for long-range ordering which results in ferrimagnetism, ferromagnetism, or antiferromagnetism.
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