depth based on spectrum analysis of the magnetic anomaly.
Each type of piezoelectric ceramics has its Curie point
at different temperatures.
It was revealed that annealing just above the Curie point
(120-130[degrees]C) caused a marked increase in crystallinity, whereas annealing in the paraelectric state (130-145[degrees]C) induced crystal growth.
It is the only pure substance with a Curie point
near room temperature and exhibits a significant magnetocaloric effect over a large temperature span.
When the Curie point
is reached the material undergoes a transition to the paraelectric phase, the crystal lattice changes from tetragonal to cubic and it displays the highly desirable nonhysteretic electric field response that is also shown.
Formerly, TGA temperature calibrations could only be performed using time-consuming and relatively inaccurate Curie Point
measurements - examining magnetic properties of certain metals while suspended in the heated furnace.
This does necessitate several requirements of the system being tested--l) the shaft material must be capable of being magnetized, 2) the shaft does not reach Curie point
This does necessitate several requirements of the system being tested--1) the shaft material must be capable of being magnetized, 2) the shaft does not reach Curie point
is ferrous and contains some nickel); 2) does not reach Curie point
during operation (i.
These detectors are based on the fact that ferroelectric materials, such as lithium tantalate, exhibit a large spontaneous electrical polarization below a temperature known as the Curie point