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Complex magnetic ordering in CeGe1.76 studied by neutron diffraction

TitleComplex magnetic ordering in CeGe1.76 studied by neutron diffraction
Publication TypeJournal Article
Year of Publication2014
AuthorsJayasekara, WT, Tian, W, Hodovanets, H, Canfield, PC, Bud'ko, SL, Kreyssig, A, Goldman, AI
JournalPhysical Review B
Date Published10
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberWOS:000343944500002
Keywordscege2, crystal-structure, heat, rare-earth, resistivity, susceptibility

Neutron diffraction measurements on a single crystal of CeGe1.76 reveal a complex series of magnetic transitions at low temperature. At T-N approximate to 7 K, there is a transition from a paramagnetic state at higher temperature to an incommensurate magnetic structure characterized by a magnetic propagation vector ( 0 0 tau) with tau approximate to 1/4 and the magnetic moment along the a axis of the orthorhombic unit cell. Below T-LI approximate to 5 K, the magnetic structure locks in to a commensurate structure with tau = 1/4 and the magnetic moment remains along the a axis. Below T* approximate to 4 K, we find additional half-integer and integer indexed magnetic Bragg peaks consistent with a second commensurately ordered antiferromagnetic state.

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