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Electric field control of magnetic properties of Nd2Fe14B thin films grown onto PMNPT substra.
- Source :
- Applied Physics Letters; 1/9/2017, Vol. 110 Issue 2, p1-5, 5p, 4 Graphs
- Publication Year :
- 2017
-
Abstract
- Nd<subscript>2</subscript>Fe<subscript>14</subscript>B films with easy magnetization axis perpendicular to the film plane were grown onto Tabuffered piezoelectric (011)-0.7Pb(Mg<subscript>1/3</subscript>Nb<subscript>2/3</subscript>)O<subscript>3</subscript>-0.3PbTiO<subscript>3</subscript> (PMN-PT) substrates using a magnetron sputtering technique. The film retains good permanent magnetic properties, with coercivities up to 1.4 T and spin reorientation near 150 K. Our investigations demonstrated that the converse piezoelectric effect generated by an electric field across the PMN-PT substrate can rotate the angle of spin reorientation of the Nd<subscript>2</subscript>Fe<subscript>14</subscript>B films, resulting in a considerable manipulation of magnetization by the electric field at temperatures below 150 K. The ratio of magnetization change reaches 30% in a magnetic field of 2 T when an electric field of 6 kV/cm is applied at 30 K. With increasing temperature, the electric field-induced tunability of magnetization decreases. These observations of permanent magnetic properties and electrically controlled magnetization effects make the Nd<subscript>2</subscript>Fe<subscript>14</subscript>B/PMN-PT heterostructure attractive for exploring multifunctional magnetic/electric devices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 110
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 120707472
- Full Text :
- https://doi.org/10.1063/1.4973755