材料科学
磁强计
兴奋剂
杂质
饱和(图论)
分析化学(期刊)
剩磁
铁磁性
感应耦合
六方晶系
凝聚态物理
纳米复合材料
核磁共振
纳米技术
磁化
结晶学
磁场
光电子学
物理
化学
数学
色谱法
量子力学
组合数学
作者
M.A. Almessiere,Y. Slimani,N.A. Algarou,M.G. Vakhitov,D.S. Klygach,A. Baykal,T.I. Zubar,С.В. Труханов,А.В. Труханов,Hussein Attia,M. Sertkol,I.A. Auwal
标识
DOI:10.1002/aelm.202101124
摘要
Abstract The Sr 0.5 Ba 0.5 Sc x Fe 12– x O 19 (SrBaSc)/NiFe 2 O 4 (NiFe) hard–soft nanocomposites (NCs) are synthesized by in situ sol–gel route. Impact of Sc 3+ doping on their structure, morphology, and magnetic properties are examined. X‐ray diffraction confirms the coexistence of SrBaSc and NiFe phases without any impurity. Morphology of NCs reveals a cluster of hexagonal plate decorated by spherical grains. Magnetic characteristics of the NCs are examined by using a vibration sample magnetometer at room temperature and 10 K. The x = 0.000 sample shows some kinks in their M–H loops and the occurrence of two peaks in d M /d H (H). All the NCs with Sc 3+ exhibit smooth shapes of M – H curves with single peak, revealing the complete and perfect exchange coupling behavior. The diverse magnetic parameters at both temperatures are determined. The values of saturation and remanent magnetizations are decreasing with the Sc content increase. The intensive electromagnetic absorption is observed in all the samples. Reflection loss (RL) of more than ‐ 18 dB is observed above 3 GHz. Strong coupling between Sc concentration and amplitude–frequency characteristics of the RL can be used for developing of the functional media for high‐frequency devices and will open broad perspectives for practical application in radar‐absorbing technology and electromagnetic compatibility.
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