<s>
Piezomagnetism	B-Algorithm
is	O
a	O
phenomenon	O
observed	O
in	O
some	O
antiferromagnetic	O
and	O
ferrimagnetic	O
crystals	O
.	O
</s>
<s>
In	O
a	O
piezomagnetic	B-Algorithm
material	O
,	O
one	O
may	O
induce	O
a	O
spontaneous	O
magnetic	O
moment	O
by	O
applying	O
mechanical	O
stress	O
,	O
or	O
a	O
physical	O
deformation	O
by	O
applying	O
a	O
magnetic	O
field	O
.	O
</s>
<s>
Piezomagnetism	B-Algorithm
differs	O
from	O
the	O
related	O
property	O
of	O
magnetostriction	O
;	O
if	O
an	O
applied	O
magnetic	O
field	O
is	O
reversed	O
in	O
direction	O
,	O
the	O
strain	O
produced	O
changes	O
signs	O
.	O
</s>
<s>
Additionally	O
,	O
a	O
non-zero	O
piezomagnetic	B-Algorithm
moment	O
can	O
be	O
produced	O
by	O
mechanical	O
strain	O
alone	O
,	O
at	O
zero	O
fields	O
,	O
which	O
is	O
not	O
true	O
of	O
magnetostriction	O
.	O
</s>
<s>
According	O
to	O
the	O
Institute	O
of	O
Electrical	O
and	O
Electronics	O
Engineers	O
(	O
IEEE	O
)	O
:	O
"	O
Piezomagnetism	B-Algorithm
is	O
the	O
linear	O
magneto-mechanical	O
effect	O
analogous	O
to	O
the	O
linear	O
electromechanical	O
effect	O
of	O
piezoelectricity	O
.	O
</s>
<s>
The	O
piezomagnetic	B-Algorithm
effect	O
is	O
made	O
possible	O
by	O
an	O
absence	O
of	O
certain	O
symmetry	O
elements	O
in	O
a	O
crystal	O
structure	O
;	O
specifically	O
,	O
symmetry	O
under	O
time	O
reversal	O
forbids	O
the	O
property	O
.	O
</s>
<s>
The	O
first	O
experimental	O
observation	O
of	O
piezomagnetism	B-Algorithm
was	O
made	O
in	O
1960	O
,	O
in	O
the	O
fluorides	O
of	O
cobalt	B-Algorithm
and	O
manganese	O
.	O
</s>
