Lanthanum aluminate-calcium-titanate solid solutions (ALTK)

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Lanthanum aluminate-calcium-titanate solid solutions (ALTK)

Lanthanum aluminate-calcium-titanate is used as the main crystal phase in high frequency radioceramic. The product is produced in the form of 10 compositions according to Technical Specification (TY) 2664-050-48591565-2016.

Characteristics

Name

Norm

Composition 0

Composition 1

Composition 2

Composition 3

Composition 4

Composition 5

Composition 6

Composition 7

Composition 8

Composition 9

1. Temperature coefficient of dielectric permittivity α 10-6/K   

+33±15

0±15

-33±15

-47±15

-75±15

-150±20

-220±50

-330±50

-470±70

-750±70

2. Dielectric permittivity ε, not more

35

38

41

44

46

50

55

60

75

95

3. Tangent of the dielectric loss angle (tgδ*10-4)

3.1. before moistening, not more

3

3

3

3

3

3

3

3

3

3

3.2. after moistening, not more

6

6

6

6

6

6

6

6

6

6

4. Mass fraction of free La2O3, %, not more

0,3

0,3

0,3

0,3

0,3

0,3

0,3

0,2

0,2

0,2

5. Mass fraction of free CaO, %, not more

0,6

0,6

0,6

0,6

0,6

0,6

0,6

0,6

0,6

0,6

6. Mass fraction of chlorides (Cl), %, not more

0,05

0,05

0,05

0,05

0,05

0,05

0,05

0,05

0,05

0,05

7. Mass fraction of magnetic impurities, %, not more

0,002

0,002

0,002

0,002

0,002

0,002

0,002

0,002

0,002

0,002

8. Specific area (Sуд), sm2/g, within

1500-4000

informative

9. Mass fraction of substances insoluble in HCl, %, not more

2

2

2

2

2

2

not applicable