Xiao Tan , Qian Liu , Chang Li , Xin You , Chongsheng Wu , Tianpeng Liang , Yuanming Lai
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引用次数: 0
Abstract
Composites based on X-type hexaferrites with Gd3+-Mg2+ co-substitution were synthesized through solid-phase reaction combined with c-axis orientation for the application of self-biased circulator. The substitution ions Gd3+ and Mg2+ successfully substituted the host ions Ba2+ and Fe3+, respectively. The XRD pattern exhibited a compound phase formation containing W, X and α-Fe2O3 phase. The oriented growth of typical hexagonal grains was observed in the microscopic morphology of natural surface and cross-section, which validates the c-axis preferential of X-type hexaferrites. When the substitution concentration x is 0.15, high saturation magnetization Ms (73.98emu/g), remanence Mr of 49.71 emu/g and remanence ratio Mr/Ms of 0.65 were simultaneously achieved. The ferromagnetic resonance (FMR) linewidth ΔH measurements is performed through perturbational method based on coplanar waveguide at V band (41–46 GHz).
期刊介绍:
Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties.
Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour.
Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.