Set here a crystallographic or atomic plane.
Reference
GAMGI can handle crystallographic planes, related with a cell containing
the relevant crystallographic information, and atomic planes, defined by
three non-colinear atoms.
To create crystallographic planes, set
Reference to
Cell.
GAMGI automatically shows a
Cell entry,
H,
K,
L
entries to indicate the plane indices, plus a
Vectors menu, to select
the cell vectors to use,
Conventional or
Primitive. For the sake
of simplicity, GAMGI does not accept 4-indice notation for planes or directions
in hexagonal cells.
Pressing the mouse over a cell in the current layer, the cell identification
is automatically written in the
Cell entry. When a valid cell is found
and its
Type is
Projection, the default
Polygon page
is automatically replaced by a
Projection page.
By default, only one family of crystallographic planes is created.
To create a set of families simultaneously, press the button
List.
When
Reference is set to
Atoms, GAMGI automatically shows
three
Atom entries. Pressing the mouse sucessively over three
non-colinear atoms in the current layer, the three entries become occupied
and the plane defined. After pressing
Ok, an error is shown when
the three atoms are collinear.