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Introduction
Published in Ramanathan Srinivasan, Fathima Fasmin, An Introduction to Electrochemical Impedance Spectroscopy, 2021
Ramanathan Srinivasan, Fathima Fasmin
Another variable that is sometimes used in the analysis is admittance. It is usually denoted by Y and is the inverse of impedance. Admittance can also be thought of as a generalized form of conductance. Again, in the context of electrochemistry, differential admittance is normally employed, but the word differential is often left out for convenience. Sometimes, the word immittance is used to refer to either admittance or impedance, but that usage is not very common now.
Phasor analysis of a.c. circuits
Published in David Crecraft, David Gorham, electronics, 2018
Admittance is the reciprocal of impedance; it is a phasor operator which relates the phasor current in a two-terminal network to the phasor voltage across it. It is defined by the equation Y=IV
An Introduction to Capacitance Spectroscopy in Semiconductors
Published in Jian V. Li, Giorgio Ferrari, Capacitance Spectroscopy of Semiconductors, 2018
The reciprocal quantity of admittance is impedance Z, which measures how well in a generalized sense the circuit element resists (impedes) current under a given voltage. That is, I = Z−1V, where Z is also generally a complex number with Z = |Z| exp (− jωθz) = Z′ + jZ″, and Z = Y−1, an example of which is shown in Fig. 1.3b.
Revived tungsten bronze ceramic for thermistor and RAM devices
Published in Phase Transitions, 2020
B. N. Parida, S. Behera, R. Padhee, Piyush R. Das
Most common and easiest technique for electrical characterization of the oxide-based ceramics is admittance/impedance spectroscopy. This technique is most constructive, errorless, user-friendly to distinguish among grain, grain wall and electrode effects present in the compounds. For this, admittance or impedance measurement is carried out over a wide frequency and temperature range using impedance analyser. The impedance data are helpful in estimating the time constant/relaxation time so that different effects in the compounds can be separated [35].