Mn1. 35Fe0. 65P0. 45Si0. 55Bx合金的磁热效应

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Abstract Structure and magnetocaloric effect（MCE）of the Mn1. 35Fe0. 65P0. 45Si0. 55Bx（x= 0, 0. 01, 0. 02, 0. 03 and 0. 04, atomic fraction）alloys have been investigated. XRD result shows that the Mn1. 35Fe0. 65P0. 45Si0. 55Bx（x= 0, 0. 01, 0. 02, 0. 03 and 0. 04）alloys mainly consist of the Fe2P-type hexagonal structure phase with space group P6-2 m. With increasing x lattice parameter a increases while lattice parameter c decreases, unit cell volume V decreases slightly. The magnetic measurements show that the Curie temperature increases from 228 to 315 K, while the thermal hysteresis has little change. The maximum magnetic entropy change, in a magnetic field change of 0-1. 5 T, decrease slightly with increasing boron content and their values are 3. 6, 2. 5, 2. 0, 1. 7 and 1. 9 J/(kg·K), respectively.

Key words： magnetocaloric effect thermal hysteresis phase transition Curie temperature magnetic entropy

Received: 16 December 2013 Published: 11 March 2014

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	SONG Lin

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SONG Lin. Magnetocaloric Effect of Mn1. 35Fe0. 65P0. 45Si0. 55BxAlloys[J]. , 2014, 21(1): 5-8.

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http://edit.chinamet.cn/Jweb_jsgncl/EN/ OR http://edit.chinamet.cn/Jweb_jsgncl/EN/Y2014/V21/I1/5

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