Abstract
A new rare earth metal Zintl phase, Eu3In2P 4, was synthesized by utilizing a metal flux method. The compound crystallizes in the orthorhombic space group Pnnm with the cell parameters a = 16.097(3) Å, b = 6.6992(13) Å, c = 4.2712(9) Å, and Z = 2 (T = 90(2) K, R1 = 0.0159, wR2 = 0.0418 for all data). It is isostructural to Sr3In2P4. The structure consists of tetrahedral dimers, [In2P2P4/2]6-, that form a one-dimensional chain along the c axis. Three europium atoms interact via a Eu-Eu distance of 3.7401(6) Å to form a straight line triplet. Single-crystal magnetic measurements show anisotropy at 30 K and a magnetic transition at 14.5 K. High-temperature data give a positive Weiss constant, which suggests ferromagnetism, while the shape of susceptibility curves (χ vs T) suggests antiferromagnetism. Heat capacity shows a magnetic transition at 14.5 K that is suppressed with field. This compound is a semiconductor according to the temperature-dependent resistivity measurements with a room-temperature resistivity of 0.005(1) Ω m and Eg = 0.452(4) eV. It shows negative magnetoresistance below the magnetic ordering temperature. The maximum magnetoresistance (Δρ/ρ(H)) is 30% at 2 K with H = 5 T.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 5322-5327 |
| Number of pages | 6 |
| Journal | Inorganic Chemistry |
| Volume | 44 |
| Issue number | 15 |
| DOIs | |
| State | Published - Jul 25 2005 |
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ASJC Scopus subject areas
- Inorganic Chemistry
Cite this
Negative magnetoresistance in a magnetic semiconducting zintl phase : Eu3In2P4. / Jiang, Jiong; Olmstead, Marilyn M.; Kauzlarich, Susan M.; Lee, Han Oh; Klavins, Peter; Fisk, Zachary.
In: Inorganic Chemistry, Vol. 44, No. 15, 25.07.2005, p. 5322-5327.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Negative magnetoresistance in a magnetic semiconducting zintl phase
T2 - Eu3In2P4
AU - Jiang, Jiong
AU - Olmstead, Marilyn M.
AU - Kauzlarich, Susan M.
AU - Lee, Han Oh
AU - Klavins, Peter
AU - Fisk, Zachary
PY - 2005/7/25
Y1 - 2005/7/25
N2 - A new rare earth metal Zintl phase, Eu3In2P 4, was synthesized by utilizing a metal flux method. The compound crystallizes in the orthorhombic space group Pnnm with the cell parameters a = 16.097(3) Å, b = 6.6992(13) Å, c = 4.2712(9) Å, and Z = 2 (T = 90(2) K, R1 = 0.0159, wR2 = 0.0418 for all data). It is isostructural to Sr3In2P4. The structure consists of tetrahedral dimers, [In2P2P4/2]6-, that form a one-dimensional chain along the c axis. Three europium atoms interact via a Eu-Eu distance of 3.7401(6) Å to form a straight line triplet. Single-crystal magnetic measurements show anisotropy at 30 K and a magnetic transition at 14.5 K. High-temperature data give a positive Weiss constant, which suggests ferromagnetism, while the shape of susceptibility curves (χ vs T) suggests antiferromagnetism. Heat capacity shows a magnetic transition at 14.5 K that is suppressed with field. This compound is a semiconductor according to the temperature-dependent resistivity measurements with a room-temperature resistivity of 0.005(1) Ω m and Eg = 0.452(4) eV. It shows negative magnetoresistance below the magnetic ordering temperature. The maximum magnetoresistance (Δρ/ρ(H)) is 30% at 2 K with H = 5 T.
AB - A new rare earth metal Zintl phase, Eu3In2P 4, was synthesized by utilizing a metal flux method. The compound crystallizes in the orthorhombic space group Pnnm with the cell parameters a = 16.097(3) Å, b = 6.6992(13) Å, c = 4.2712(9) Å, and Z = 2 (T = 90(2) K, R1 = 0.0159, wR2 = 0.0418 for all data). It is isostructural to Sr3In2P4. The structure consists of tetrahedral dimers, [In2P2P4/2]6-, that form a one-dimensional chain along the c axis. Three europium atoms interact via a Eu-Eu distance of 3.7401(6) Å to form a straight line triplet. Single-crystal magnetic measurements show anisotropy at 30 K and a magnetic transition at 14.5 K. High-temperature data give a positive Weiss constant, which suggests ferromagnetism, while the shape of susceptibility curves (χ vs T) suggests antiferromagnetism. Heat capacity shows a magnetic transition at 14.5 K that is suppressed with field. This compound is a semiconductor according to the temperature-dependent resistivity measurements with a room-temperature resistivity of 0.005(1) Ω m and Eg = 0.452(4) eV. It shows negative magnetoresistance below the magnetic ordering temperature. The maximum magnetoresistance (Δρ/ρ(H)) is 30% at 2 K with H = 5 T.
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U2 - 10.1021/ic0504036
DO - 10.1021/ic0504036
M3 - Article
C2 - 16022530
AN - SCOPUS:23244460373
VL - 44
SP - 5322
EP - 5327
JO - Inorganic Chemistry
JF - Inorganic Chemistry
SN - 0020-1669
IS - 15
ER -