Class information for:
Level 1: PTCR//PTCR EFFECT//PTC DEVICES

Basic class information

Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes

The table includes all classes above and classes immediately below the current class.



Cluster id Level Cluster label #P
1 4 PHYSICS, CONDENSED MATTER//PHYSICS, APPLIED//MATERIALS SCIENCE, MULTIDISCIPLINARY 2188495
85 3       FERROELECTRICS//DIELECTRIC PROPERTIES//INTEGRATED FERROELECTRICS 81809
163 2             DIELECTRIC PROPERTIES//MICROWAVE DIELECTRIC PROPERTIES//BATIO3 21881
9675 1                   PTCR//PTCR EFFECT//PTC DEVICES 1164

Terms with highest relevance score



rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 PTCR authKW 1306826 6% 72% 67
2 PTCR EFFECT authKW 641230 3% 79% 30
3 PTC DEVICES authKW 290077 1% 71% 15
4 GASEOUS PENETRATION authKW 246132 1% 91% 10
5 POSITIVE TEMPERATURE COEFFICIENT OF RESISTIVITY PTCR authKW 243672 1% 100% 9
6 PTCR CERAMICS authKW 243672 1% 100% 9
7 POSITIVE TEMPERATURE COEFFICIENT OF RESISTIVITY authKW 221098 1% 58% 14
8 BATIO3 authKW 202754 9% 7% 102
9 SEMICONDUCTING CERAMICS authKW 192700 1% 65% 11
10 OXYGEN COULOMETRY authKW 135373 0% 100% 5

Web of Science journal categories



chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Materials Science, Ceramics 29615 32% 0% 368
2 Materials Science, Multidisciplinary 2674 35% 0% 409
3 Physics, Condensed Matter 1744 22% 0% 252
4 Physics, Applied 1038 21% 0% 249
5 Materials Science, Composites 377 3% 0% 33
6 Microscopy 261 2% 0% 20
7 Metallurgy & Metallurgical Engineering 251 6% 0% 68
8 Engineering, Electrical & Electronic 66 7% 0% 84
9 Instruments & Instrumentation 37 3% 0% 31
10 Materials Science, Characterization, Testing 21 1% 0% 8

Address terms



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ADV MAT SYST SCI 112810 0% 83% 5
2 ELECT INFORMAT ELE OMECH ENGN 81224 0% 100% 3
3 ENGN FUNCT CERAM MOE 61882 0% 57% 4
4 TRANSELCO 54149 0% 100% 2
5 ELECT INFORMAT MECHATRON ENGN 48732 0% 60% 3
6 ENGN FUNCT CERAM 48726 1% 30% 6
7 STATE FINE CERAM NEW PROC 37479 1% 23% 6
8 STATE ADV CERAM FINE PROC 36098 0% 67% 2
9 UNIT 91439 36098 0% 67% 2
10 ALLGEMEINE ANALYT PHYS CHEM 27075 0% 100% 1

Journals



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 JOURNAL OF THE AMERICAN CERAMIC SOCIETY 23430 11% 1% 129
2 FERROELECTRICS 7637 5% 0% 60
3 NIPPON SERAMIKKUSU KYOKAI GAKUJUTSU RONBUNSHI-JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 6312 2% 1% 18
4 JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 5466 4% 0% 45
5 JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 4926 4% 0% 42
6 JOURNAL OF ELECTROCERAMICS 4755 2% 1% 18
7 JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 4408 2% 1% 28
8 JOURNAL OF MATERIALS SCIENCE 3702 6% 0% 65
9 KEY ENGINEERING MATERIALS 2753 3% 0% 32
10 JOURNAL OF INORGANIC MATERIALS 2648 2% 0% 21

Author Key Words



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 PTCR 1306826 6% 72% 67 Search PTCR Search PTCR
2 PTCR EFFECT 641230 3% 79% 30 Search PTCR+EFFECT Search PTCR+EFFECT
3 PTC DEVICES 290077 1% 71% 15 Search PTC+DEVICES Search PTC+DEVICES
4 GASEOUS PENETRATION 246132 1% 91% 10 Search GASEOUS+PENETRATION Search GASEOUS+PENETRATION
5 POSITIVE TEMPERATURE COEFFICIENT OF RESISTIVITY PTCR 243672 1% 100% 9 Search POSITIVE+TEMPERATURE+COEFFICIENT+OF+RESISTIVITY+PTCR Search POSITIVE+TEMPERATURE+COEFFICIENT+OF+RESISTIVITY+PTCR
6 PTCR CERAMICS 243672 1% 100% 9 Search PTCR+CERAMICS Search PTCR+CERAMICS
7 POSITIVE TEMPERATURE COEFFICIENT OF RESISTIVITY 221098 1% 58% 14 Search POSITIVE+TEMPERATURE+COEFFICIENT+OF+RESISTIVITY Search POSITIVE+TEMPERATURE+COEFFICIENT+OF+RESISTIVITY
8 BATIO3 202754 9% 7% 102 Search BATIO3 Search BATIO3
9 SEMICONDUCTING CERAMICS 192700 1% 65% 11 Search SEMICONDUCTING+CERAMICS Search SEMICONDUCTING+CERAMICS
10 OXYGEN COULOMETRY 135373 0% 100% 5 Search OXYGEN+COULOMETRY Search OXYGEN+COULOMETRY

Core articles

The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.

Classes with closest relation at Level 1



rank cluster_id2 link
1 2491 BATIO3//BARIUM TITANATE//MLCC
2 18466 RESISTIVE OXYGEN SENSOR//CHRISTIAN DOPPLER FERRO MAT//SRTI1 XFEXO3 DELTA
3 3394 BARIUM TITANATE//BATIO3//BARIUM TITANYL OXALATE
4 11213 MAT INTER E//COMPLEXION//ABNORMAL GRAIN GROWTH
5 34775 DEVICE PROC UNIT//LI NB TI O SOLID SOLUTION//ANISOTROPIC ELECTRIC PROPERTY
6 21868 HEXAGONAL BATIO3//FE DOPED BATIO3//HEXAGONAL BARIUM TITANATE
7 36321 OXIFLUORIDE//10NB0//10O2
8 3436 VARISTORS//ZNO VARISTOR//SEMICOND CERAM
9 21676 BATIO3 THIN FILM//TOPMOST SURFACE//BATIO3 FILM
10 36202 HETEROCONTACT//COMPOSITE GAS SENSOR//COPPER OXIDE ZINC OXIDE HETEROCONTACTS

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