What is it about?
Experimental values for s11 have been reproduced theoretically. Following our previous theoretical research, a systematic procedure is set out here for experimentalists to use in order to characterize microwave absorption in preference to the main stream methods based on “reflection loss”.
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Why is it important?
Reflection loss RL is the main parameter used in the main stream method for characterizing the microwave dissipative power of a material. The definition of RL is illogical and alternative procedures characterizing microwave absorption need to be developed. It should be noted that the practice of using RL has continued even though there have been no published views opposing our critical arguments against using this parameter. This is not unexpected because researchers may well believe that the prevalent method repeated in many publications could not be wrong. However, scientists still using RL need to justify this procedure in the light of our arguments.
Perspectives
The concept of reflection loss contradicts fundamental principles in transmission-line theory and as a result is used to interpret experimental data wrongly.
Yue Liu
Shenyang Normal University
Read the Original
This page is a summary of: Microwave absorption properties of Ag/NiFe2-xCexO4 characterized by an alternative procedure rather than the main stream method using “reflection loss”, Materials Chemistry and Physics, January 2020, Elsevier,
DOI: 10.1016/j.matchemphys.2019.122615.
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