Antiperovskite materials are deemed as a promising candidate
for
data storage and efficient energy conversion, exemplified by giant
magnetoresistance (GMR) and magnetocaloric effect (MCE). In particular,
the abundant magnetic configurations of antiperovskites endow them
with a high degree of diversity in probing novel phenomena. Herein,
we report the critical behavior of the antiperovskite Sn0.6NFe3.4 with an obvious second-order magnetic transition
around Curie temperature (T
C = 230 K).
The obtained critical exponents (β, γ, and δ) are
well consistent for different theoretical methods, which are also
verified by the Widom scaling law and scaling equation. It is found
that the critical exponent of β is much in accordance with the
value of the mean-field model, indicating a long-range FM coupling
in the system, whereas the other γ and δ are accessible
to the three-dimensional (3D) Heisenberg model. Our work promotes
the understanding of antiperovskite magnetism, providing insight for
further fundamental research and resulting applications.