Giant radiofrequency magnetoabsorption in La0.5Sr0.5CoO3 cobaltite

被引：5
|
作者：
Kirichenko, A. Ya.
Belevtsev, B. I.
Golubnichaya, G. V.
Maximchuk, I. G.
Cherpak, N. T.
Chukanova, I. N.
机构：
[1] Natl Acad Sci Ukraine, Usikov Inst Radiophys & Elect, UA-61085 Kharkov, Ukraine
[2] Natl Acad Sci Ukraine, Verkin Physicotech Inst Low Temp, UA-61103 Kharkov, Ukraine
[3] Natl Acad Sci Ukraine, Kharkov Single Crystals Inst, UA-61001 Kharkov, Ukraine
来源：
TECHNICAL PHYSICS | 2007年 / 52卷 / 05期
关键词：
D O I：
10.1134/S1063784207050131
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Giant radiofrequency magnetoabsorption in La0.5Sr0.5CoO3 polycrystalline lanthanum cobaltite is studied in the temperature interval 77-300 K and 0.5-12.5 MHz frequency range. The specimen's Curie temperature T-C is about 250 K. The magnetoabsorption is found to increase with decreasing frequency, reaching 58% at f = 0.5 MHz near the Curie temperature. The results are satisfactorily explained based on the known physical ideas of high-frequency wave absorption in magnetic materials. The effects of giant magnetoabsorption and rapid variation of the absorption near the Curie temperature can be used in radiofrequency sensors of the magnetic field and temperature.
引用
收藏
页码：616 / 620
页数：5
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