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We have studied systematically the effects of temperature, time, and pressure on the process of hydrogen absorption in LaFe11.5Si1.5 compound. Results show that hydrogen absorption can increase the lattice parameter of the compound without changing its crystal structure. The LaFe11.5Si1.5H1.6 compound can be prepared at a hydrogen pressure of 0.0987 MPa at 423 K with uniform distribution of hydrogen. Hydrogen absorption can also increase the Curie temperature obviously, decrease the thermal hysteresis and maintain the magnetic entropy change at a high standard. With prolonged exposure time in air, the variation of the Curie temperature and magnetic entropy change of LaFe11.5Si1.5H1.6 compound are very small, implying that the magnetic thermal performance of hydride alloy has a good time stability.
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Keywords:
- P-C-T relation plot /
- Curie temperature /
- magnetic entropy change /
- hydrides
[1] Warburg E, Untersuchungen M, Magnetische Untersuchungen 1881 Ann. Phys. 13 141
[2] Zhao X, Chen W, Li A J, Ma L M, Zong Y 2009 Chin. Phys. Lett. 26 87401
[3] Hui X D, Xu Z Y, Wang E R, Chen G L, Lu Z P 2010 Chin. Phys. Lett. 27 117502
[4] Zhang G Y, Chen H, Yang D, Hu F, Liu H S 2012 Chin. Phys. Lett. 29 27502
[5] Wang F, Yuan F Y, Wang J Z 2013 Acta. Phys. Sin. 62 167501[王芳, 原凤英, 汪金芝 2013 物理学报 62 167501]
[6] Hu F X, Shen B G, Sun J R 2013 Chin. Phys. B 22 037505
[7] Shen B G, Sun J R, Hu F X, Zhang H W, Cheng Z H 2009 Adv. Mater. 21 4545
[8] Shen J, Li Y X, Wang F, Wang G J, Zhang S Y 2004 Chin. Phys. 13 1134
[9] Wang F, Chen Y F, Wang G J, Sun J R, Shen B G 2004 Chin. Phys. 13 1344
[10] Shen J, Gao B, Yan L Q, Li Y X, Zhang H W, Hu F X, Sun J R 2007 Chin. Phys. 16 3848
[11] Wang F, Wang G J, Sun J R, Shen B G 2008 Chin. Phys. B 17 3087
[12] Shen B G, Hu F X, Dong Q Y, Sun J R 2013 Chin. Phys. B 18 017502
[13] Tishin A M 1999 Handbook of Magnetic Materials (Vol. 12) (Amsterdam: Elsevier) pp395–524
[14] Gschneidner K A, Pecharsky V K, Tsokol A O 2005 Rep. Prog. Phys. 68 1479
[15] Hu F X, Qian X L, Sun J R, Wang G J, Zhang X X, Cheng Z H, Shen B G 2002 J. Appl. Phys. 92 3620
[16] Balli M, Fruchart D, Gignoux D 2007 J. Phys.: Condens. Matter 19 236230
[17] Shen J, Li Y X, Zhang J, Gao B, Hu F X, Zhang H W, Chen Y Z, Rong C B, Sun J R 2008 J. Appl. Phys. 103 07B317
[18] Yan A, Mller K H, Gutfleisch O 2008 J. Alloys Compd. 450 18
[19] Liu G J, Sun J R, Shen J, Gao B, Zhang H W, Hu F X, Shen B G 2007 Appl. Phys. Lett. 90 032507
[20] Wang F, Chen Y F, Wang G J, Sun J R, Shen B G 2004 Chin. Phys. 13 393
[21] Chen J, Zhang H W, Zhang L G, Dong Q Y, Wang R W 2006 Chin. Phys. 15 845
[22] Zhao J L, Shen J, Hu F X, Li Y X, Sun J R, Shen B G 2010 J. Appl. Phys. 107 113911
[23] Chen Y F, Wang F, Shen B G, Hu F X, Cheng Z H, Wang G J, Sun J R 2002 Chin. Phys. 11 741
[24] Fu B, Long Y, Shi P J, Ma T, Bao B, Yan A R, Chen R J 2009 Chin. Phys. B 18 4506
[25] Zhao J L 2010 Ph. D. Dissertation (Tianjin: Hebei University of Technology) (in Chinese) [赵金良2010博士学位论文(天津: 河北工业大学)]
[26] Zhao J L, Shen J, Shen B G, Hu F X, Sun J R 2010 Solid State Commun. 150 2330
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[1] Warburg E, Untersuchungen M, Magnetische Untersuchungen 1881 Ann. Phys. 13 141
[2] Zhao X, Chen W, Li A J, Ma L M, Zong Y 2009 Chin. Phys. Lett. 26 87401
[3] Hui X D, Xu Z Y, Wang E R, Chen G L, Lu Z P 2010 Chin. Phys. Lett. 27 117502
[4] Zhang G Y, Chen H, Yang D, Hu F, Liu H S 2012 Chin. Phys. Lett. 29 27502
[5] Wang F, Yuan F Y, Wang J Z 2013 Acta. Phys. Sin. 62 167501[王芳, 原凤英, 汪金芝 2013 物理学报 62 167501]
[6] Hu F X, Shen B G, Sun J R 2013 Chin. Phys. B 22 037505
[7] Shen B G, Sun J R, Hu F X, Zhang H W, Cheng Z H 2009 Adv. Mater. 21 4545
[8] Shen J, Li Y X, Wang F, Wang G J, Zhang S Y 2004 Chin. Phys. 13 1134
[9] Wang F, Chen Y F, Wang G J, Sun J R, Shen B G 2004 Chin. Phys. 13 1344
[10] Shen J, Gao B, Yan L Q, Li Y X, Zhang H W, Hu F X, Sun J R 2007 Chin. Phys. 16 3848
[11] Wang F, Wang G J, Sun J R, Shen B G 2008 Chin. Phys. B 17 3087
[12] Shen B G, Hu F X, Dong Q Y, Sun J R 2013 Chin. Phys. B 18 017502
[13] Tishin A M 1999 Handbook of Magnetic Materials (Vol. 12) (Amsterdam: Elsevier) pp395–524
[14] Gschneidner K A, Pecharsky V K, Tsokol A O 2005 Rep. Prog. Phys. 68 1479
[15] Hu F X, Qian X L, Sun J R, Wang G J, Zhang X X, Cheng Z H, Shen B G 2002 J. Appl. Phys. 92 3620
[16] Balli M, Fruchart D, Gignoux D 2007 J. Phys.: Condens. Matter 19 236230
[17] Shen J, Li Y X, Zhang J, Gao B, Hu F X, Zhang H W, Chen Y Z, Rong C B, Sun J R 2008 J. Appl. Phys. 103 07B317
[18] Yan A, Mller K H, Gutfleisch O 2008 J. Alloys Compd. 450 18
[19] Liu G J, Sun J R, Shen J, Gao B, Zhang H W, Hu F X, Shen B G 2007 Appl. Phys. Lett. 90 032507
[20] Wang F, Chen Y F, Wang G J, Sun J R, Shen B G 2004 Chin. Phys. 13 393
[21] Chen J, Zhang H W, Zhang L G, Dong Q Y, Wang R W 2006 Chin. Phys. 15 845
[22] Zhao J L, Shen J, Hu F X, Li Y X, Sun J R, Shen B G 2010 J. Appl. Phys. 107 113911
[23] Chen Y F, Wang F, Shen B G, Hu F X, Cheng Z H, Wang G J, Sun J R 2002 Chin. Phys. 11 741
[24] Fu B, Long Y, Shi P J, Ma T, Bao B, Yan A R, Chen R J 2009 Chin. Phys. B 18 4506
[25] Zhao J L 2010 Ph. D. Dissertation (Tianjin: Hebei University of Technology) (in Chinese) [赵金良2010博士学位论文(天津: 河北工业大学)]
[26] Zhao J L, Shen J, Shen B G, Hu F X, Sun J R 2010 Solid State Commun. 150 2330
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