Materials Algorithms Project
Program Library

Subroutine MAP_CRYSTAL_MET1

1. Provenance of code.
2. Purpose of code.
3. Specification.
4. Description of subroutine's operation.
5. References.
6. Parameter descriptions.
7. Error indicators.
8. Accuracy estimate.
9. Any additional information.
10. Example of code
11. Auxiliary subroutines required.
12. Keywords.
13. Download source code.
14. Links.

Provenance of Source Code

H.K.D.H. Bhadeshia,
Phase Transformations Group,
Department of Materials Science and Metallurgy,
University of Cambridge,
Cambridge, U.K.

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Purpose

Calculates the metric tensor for a cubic crystal structure.

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Specification

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Description

The tensor is stored in a nine element array. The first, fifth and ninth elements are set to AP², the rest to zero.

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References

1. Microstructural Characterisation of High Temperature Materials, ed. E. Metcalfe, Institute of Metals, London, 1988, (page 33, Table 3).

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Parameters

Input parameters

AP - real

AP is the lattice parameter for the cubic system.

Output parameters

G - real array of dimension 9

G contains the metric tensor.

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Error Indicators

None.

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Accuracy

No information supplied.

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Further Comments

None.

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Example

1. Program text

       REAL AP, G(9)
       INTEGER I
       READ (5,*) AP
       CALL MAP_CRYSTAL_MET1(G,AP)
       WRITE (6,1) (G(I), I=1,9)
1      FORMAT(5X, 3F8.4)
       STOP
       END

2. Program data

2.0

3. Program results

4.0000   0.0000   0.0000         
0.0000   4.0000   0.0000
0.0000   0.0000   4.0000

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Auxiliary Routines

None.

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Keywords

cubic, metric tensor

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Download

Download source code

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