APS » PROLA » Phys. Rev. B » Volume 70 » Issue 21
< Previous article | Next article >

Phys. Rev. B 70, 214421 (2004) [6 pages]

Metastable magnetic response across the antiferromagnetic to ferromagnetic transition in Gd5Ge4

Download: PDF (234 kB) or Buy this Article (Use Article Pack) Export: BibTeX or EndNote (RIS)

M. K. Chattopadhyay1, M. A. Manekar1, A. O. Pecharsky2, V. K. Pecharsky2,3, K. A. Gschneidner, Jr.2,3, J. Moore4, G. K. Perkins4, Y. V. Bugoslavsky4, S. B. Roy1 *, P. Chaddah1, and L. F. Cohen4
1Low Temperature Physics Laboratory, Centre for Advanced Technology, Indore 452013, India
2Materials and Engineering Physics Program, Ames Laboratory of the U.S. DOE, Iowa State University, Ames, Iowa 50011-3020, USA
3Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011-2300, USA
4Blackett Laboratory, Imperial College of Science Technology and Medicine, London SW7 2BZ, United Kingdom

Received 30 April 2004; published 20 December 2004

Results of isothermal magnetization and magnetic relaxation measurements are presented probing the nature of the magnetic-field-induced magnetostructural transition in the intermetallic compound Gd5Ge4 . This transition shows the characteristics of a disorder-influenced first order transition including distinct metastable behavior. Below approximately 21  K , the transition from the magnetic-field-induced ferromagnetic state back to the antiferromagnetic state shows additional interesting features. Similarities with other classes of magnetic systems exhibiting magnetostructural transitions are pointed out.


©2004 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevB.70.214421
DOI: 10.1103/PhysRevB.70.214421
PACS: 75.30.Kz

* Email address: sbroy@cat.ernet.in

[ Abstract  |  Previous article  |  Next article  |  Issue 21 ]