Structural and magnetocaloric properties of the MnFeP0.63Ge0.12Si0.25Bx (x=0,0.01, 0.02, 0.03, atomic fraction) compounds have been inestigated. XRD result shows that the MnFeP0.63Ge0.12Si0.25Bx (x=0, 0.01, 0.02, 0.03) compounds mainly consist of the Fe2P–typhxagonal structure phase with space group P¯62m. It is fond that the lattice paraeter a increases and the lattice parameter c slighly decreases with increasing x, and the unit celvolume does not change. The agnetic measurements show that the Curie temperature increases from 300 K to 347 K, and thermal hysteresis are 20, 17, 11 and 6 K for x= 0 to 0.03. The aximm values of the magnetic entropy chage are 11.1, 11.26 and 11.8 J/(kg·K), respectively, or 0—1.5 T fields.
[1] Tegus O, Br¨uck E, Buschow K H J, de Boer F R. Nature,2002; 415: 150
[2] Yan A, M¨uller K H, Schultz L, Gutfleisch O. J Appl Phys, 2006; 99: 08K903
[3] DagulaW, Tegus O, Li XW, Song L, Br¨uck E, Cam Thanh D T, de Boer F R, Buschow K H J. J Appl Phys, 2006; 99: 08Q105
[4] Br¨uck E, Tegus O, Zhang L, Li XW, de Boer F R, Buschow K H J. J Alloys Compds, 2004; 383: 32
[5] Br¨uck E, Tegus O, Li X W, de Boer F R, Buschow K H J. Physica, 2003; 327: 431
[6] Tegus O, Fuquan B, Dagula W, Zhang L, Br¨uck E, Si P Z, de Boer F R, Buschow K H J. J Alloys Compds, 2005; 396: 6
[7] Cam Thanh D T, Br¨uck E, Tegus O, Klaasse J C P, Gortenmulder T J, Buschow K H J. J Appl Phys, 2006; 99: 08Q107
[8] Br¨uck E, Ilynb M, Tishin A M, Tegus O. J Magn Magn Mater, 2005; 290–291: 8
[9] Tegus O, Br¨uck E, Dagula W, Li X W, Zhang L, Buschow K H J, de Boer F R. J Appl Phys, 2003; 93: 7655
[10] Tegus O, Br¨uck E, Li X W, Zhang L, DagulaW, de Boer F R, Buschow K H J. J Magn Magn Mater, 2004; 272–276: 2389
[11] Zhang L, Moze O, Prokes K, Tegus O, Br¨uck E. J Magn Magn Mater, 2005; 290–291: 679
[12] Ou Z Q, Wang G F, Song L, Tegus O, Br¨uck E, Buschow K J. J Phys: Condens Matter, 2006; 18: 11577
[13] Yan A, M¨uller K H, Schultz L, Gutfleisch O. J Appl Phys, 2006; 99: 08K903
[14] Wang G F. Master Desertation, Inner Mongolia Normal University, hohhot, 2007
(王高峰. 内蒙古师范大学硕士学位论文, 呼和浩特, 2007)
[15] Zhang L. PhD Thesis, University of Amsterdam, 2005
[16] Hang J H, Song L, Jin P Y, Wang G F, Liu J R, Yan H W, Zhang J X. J Funct Mater, 2006; 37: 1888
(黄焦宏, 松林, 金培育, 王高峰, 刘金荣, 闫宏伟, 张久兴. 功能材料, 2006; 37: 1888)
[17] Li F A, Song L, Bao L H, Ha S C L, Tegus O, Hang J H. Acta Metall Sin, 2008; 44: 371
(李福安, 松林, 包黎红, 哈斯朝鲁, 特古斯, 黄焦宏. 金属学报, 2008; 44: 371)
[18] Li F A, Song L, Wang G F, Xie G Q, Zheng L, Hang J H, Tegus O. J Funct Mater, 2010; 41: 515
(李福安, 松林, 王高峰, 谢国秋, 郑立, 黄焦宏, 特古斯. 功能材料, 2010; 41: 515)
[19] Li F A, Song L, Zheng L, Hang J H, Tegus O. Met Funct Mater, 2010; 17: 22
(李福安, 松林, 郑立, 黄焦宏, 特古斯. 金属功能材料, 2010; 17: 22)
[20] Beckman O, Lundgren L, Buschow K H J. Handbook of Magnetic Materials. Amsterdam: Elsevier Science Publication, 1991: 186
[21] Gschneidner Jr K A, Pecharsky V K. Annu Rev Mater Sci, 2000; 30: 387
