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Title: Discovery of ferromagnetism with large magnetic anisotropy in ZrMnP and HfMnP

Abstract

Here, ZrMnP and HfMnP single crystals are grown by a self-flux growth technique, and structural as well as temperature dependent magnetic and transport properties are studied. Both compounds have an orthorhombic crystal structure. ZrMnP and HfMnP are ferromagnetic with Curie temperatures around 370 K and 320 K, respectively. The spontaneous magnetizations of ZrMnP and HfMnP are determined to be 1.9 μ B/f.u. and 2.1 μ B/f.u., respectively, at 50 K. The magnetocaloric effect of ZrMnP in terms of entropy change (Δ S) is estimated to be –6.7 kJ m –3 K –1 around 369 K. The easy axis of magnetization is [100] for both compounds, with a small anisotropy relative to the [010] axis. At 50 K, the anisotropy field along the [001] axis is ~4.6 T for ZrMnP and ~10 T for HfMnP. Such large magnetic anisotropy is remarkable considering the absence of rare-earth elements in these compounds. The first principle calculation correctly predicts the magnetization and hard axis orientation for both compounds, and predicts the experimental HfMnP anisotropy field within 25%. More importantly, our calculations suggest that the large magnetic anisotropy comes primarily from the Mn atoms, suggesting that similarly large anisotropies may be found in other 3dmore » transition metal compounds.« less

Authors:
ORCiD logo [1];  [1];  [2];  [3];  [1];  [1];  [1];  [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  2. Iowa State Univ., Ames, IA (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1349649
Report Number(s):
IS-J-9246
Journal ID: ISSN 0003-6951; TRN: US1701684
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 109; Journal Issue: 9; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Lamichhane, Tej N., Taufour, Valentin, Masters, Morgan W., Parker, David S., Kaluarachchi, Udhara S., Thimmaiah, Srinivasa, Bud'ko, Sergey L., and Canfield, Paul C. Discovery of ferromagnetism with large magnetic anisotropy in ZrMnP and HfMnP. United States: N. p., 2016. Web. doi:10.1063/1.4961933.
Lamichhane, Tej N., Taufour, Valentin, Masters, Morgan W., Parker, David S., Kaluarachchi, Udhara S., Thimmaiah, Srinivasa, Bud'ko, Sergey L., & Canfield, Paul C. Discovery of ferromagnetism with large magnetic anisotropy in ZrMnP and HfMnP. United States. doi:10.1063/1.4961933.
Lamichhane, Tej N., Taufour, Valentin, Masters, Morgan W., Parker, David S., Kaluarachchi, Udhara S., Thimmaiah, Srinivasa, Bud'ko, Sergey L., and Canfield, Paul C. Mon . "Discovery of ferromagnetism with large magnetic anisotropy in ZrMnP and HfMnP". United States. doi:10.1063/1.4961933. https://www.osti.gov/servlets/purl/1349649.
@article{osti_1349649,
title = {Discovery of ferromagnetism with large magnetic anisotropy in ZrMnP and HfMnP},
author = {Lamichhane, Tej N. and Taufour, Valentin and Masters, Morgan W. and Parker, David S. and Kaluarachchi, Udhara S. and Thimmaiah, Srinivasa and Bud'ko, Sergey L. and Canfield, Paul C.},
abstractNote = {Here, ZrMnP and HfMnP single crystals are grown by a self-flux growth technique, and structural as well as temperature dependent magnetic and transport properties are studied. Both compounds have an orthorhombic crystal structure. ZrMnP and HfMnP are ferromagnetic with Curie temperatures around 370 K and 320 K, respectively. The spontaneous magnetizations of ZrMnP and HfMnP are determined to be 1.9 μB/f.u. and 2.1 μB/f.u., respectively, at 50 K. The magnetocaloric effect of ZrMnP in terms of entropy change (ΔS) is estimated to be –6.7 kJ m–3 K–1 around 369 K. The easy axis of magnetization is [100] for both compounds, with a small anisotropy relative to the [010] axis. At 50 K, the anisotropy field along the [001] axis is ~4.6 T for ZrMnP and ~10 T for HfMnP. Such large magnetic anisotropy is remarkable considering the absence of rare-earth elements in these compounds. The first principle calculation correctly predicts the magnetization and hard axis orientation for both compounds, and predicts the experimental HfMnP anisotropy field within 25%. More importantly, our calculations suggest that the large magnetic anisotropy comes primarily from the Mn atoms, suggesting that similarly large anisotropies may be found in other 3d transition metal compounds.},
doi = {10.1063/1.4961933},
journal = {Applied Physics Letters},
number = 9,
volume = 109,
place = {United States},
year = {2016},
month = {8}
}

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Works referenced in this record:

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