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High lead-free positive temperature coefficient of resistivity ceramics with electrically heterogeneous structure
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10.1063/1.2799878
/content/aip/journal/apl/91/16/10.1063/1.2799878
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/16/10.1063/1.2799878
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) XRD patterns of (a) the calcined BT-0.3BNT and (b) the sintered BT-0.3BNT. The inset shows the lattice parameters of as a function of the BNT content.

Image of FIG. 2.
FIG. 2.

(Color online) Temperature dependence of resistivity of the pure BT (inset) and ceramics.

Image of FIG. 3.
FIG. 3.

(Color online) Temperature dependence of dielectric properties of the pure BT and ceramics. The inset shows the enlarged figure of dielectric loss tangent of the pure BT ceramic.

Image of FIG. 4.
FIG. 4.

(Color online) Typical impedance spectra of the pure BT and ceramics at . The insets show the temperature dependence of resistivities of the grain interiors , grain shells , and grain boundaries determined from the fitting semicircles.

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/content/aip/journal/apl/91/16/10.1063/1.2799878
2007-10-17
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: High Tc lead-free BaTiO3–(Bi1∕2Na1∕2)TiO3 positive temperature coefficient of resistivity ceramics with electrically heterogeneous structure
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/16/10.1063/1.2799878
10.1063/1.2799878
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