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We report the magnetostructural coupling near room temperature in Ni 46- x Fe x Cu 4Mn34Ga16 (0 ≤ x ≤ 10) alloys. The martensitic transformation temperature was detected over the whole composition range and was decreased by the substitution of Fe for Ni. The martensitic and austenitic Curie temperatures, TC M and TC A , were observed for 0 ≤ x ≤ 6 and 4 ≤ x ≤ 10, respectively. With the increasing Fe content, TC A was slightly increased and TC M was more rapidly increased. The paramagnetic state of the martensite phase collapsed for x > 6 with the presence of the ferromagnetic austenite phase. The magnetostructural coupling transition from paramagnetic martensite to ferromagnetic austenite was obtained within the temperature range of 300–350 K which was near room temperature.
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