No, that is not the correct spelling.
The correct spelling is sergeant.
Some example sentences are:
The police sergeant arrested the suspect.
Remember to solute the sergeant this time.
I think Sergeant Williams will be here soon.
No. It is spelt "Sergeant"
Thomas Sargant died in 1988.
Ethel Sargant died in 1918.
Ethel Sargant was born in 1863.
Naomi Sargant died in 2006.
Naomi Sargant was born in 1933.
Thomas Sargant was born in 1905.
William Sargant was born on April 24, 1907.
Philip Sargant Florence died in 1982.
James Sargant Storer was born in 1771.
James Sargant Storer died in 1853.
Mary Sargant Florence died in 1954.
Mary Sargant Florence was born in 1857.