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Pressure effect on the competition between ferromagnetic and antiferromagnetic spin fluctuations in TmTe investigated by 125Te-NMR

Identifieur interne : 000786 ( Pascal/Corpus ); précédent : 000785; suivant : 000787

Pressure effect on the competition between ferromagnetic and antiferromagnetic spin fluctuations in TmTe investigated by 125Te-NMR

Auteurs : A. Yamamoto ; S. Wada ; T. Matsumura

Source :

RBID : Pascal:07-0194304

Descripteurs français

English descriptors

Abstract

To elucidate from a microscopic point of view the initial evolution of spin fluctuations in TmTe from the semiconducting state at ambient pressure with an antiferroquadrupole ordering (TQ = 1.8K) to the intermediate-valence metallic state at high pressures P≥2 GPa with a ferromagnetic (FM) ordering (Tc ≃ 14 K), we have carried out 125Te-NMR study at pressures P = 0 and 0.9 GPa. The spin-lattice relaxation rate measurements revealed a pronounced increase of the staggered susceptibility below T≃ 14 K, in addition to the Curie-Weiss-type increase of the uniform susceptibility. Below ∼T*, a wipe-out decrease of the NMR intensity and the finding of an unconventional NMR signal around ∼ 10 MHz that is insensitive to applied field lead to the conclusion that a field-induced short-range FM ordering caused by the competition of FM and antiferromagnetic fluctuations takes place. Pressure of 0.9 GPa hardly affects the anomalous NMR behaviors below T*, leading to speculate that the short-range FM ordering in the semiconducting state shares the origin with the long-range FM ordering at≃ 14K in the high-pressure metallic state.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

pA  
A01 01  1    @0 0304-8853
A02 01      @0 JMMMDC
A03   1    @0 J. magn. magn. mater.
A05       @2 310
A06       @2 2 @3 p. 1
A08 01  1  ENG  @1 Pressure effect on the competition between ferromagnetic and antiferromagnetic spin fluctuations in TmTe investigated by 125Te-NMR
A09 01  1  ENG  @1 Proceedings of the 17th International Conference on Magnetism (ICM 2006), Kyoto, 20-25 August 2006. Part I (Chapters 1-2)
A11 01  1    @1 YAMAMOTO (A.)
A11 02  1    @1 WADA (S.)
A11 03  1    @1 MATSUMURA (T.)
A12 01  1    @1 HARIMA   (H.) @9 ed.
A12 02  1    @1 KAWAMURA   (H.) @9 ed.
A12 03  1    @1 KITAOKA  (Y.) @9 ed.
A12 04  1    @1 KOHNO   (H.) @9 ed.
A12 05  1    @1 MIYAKE  (K.) @9 ed.
A12 06  1    @1 SUZUKI  (Y.) @9 ed.
A12 07  1    @1 SAKAKIMA  (H.) @9 ed.
A12 08  1    @1 ZHENG   (G.-q.) @9 ed.
A14 01      @1 Department of Material Science, Graduate School of Science and Technology, Kobe University @2 Nada, Kobe 657-8501 @3 JPN @Z 1 aut. @Z 2 aut.
A14 02      @1 Department of Physics, Graduate School of Science, Tohoku University @2 Sendai 980-8578 @3 JPN @Z 3 aut.
A15 01      @1 Kobe University @3 JPN @Z 1 aut.
A15 02      @1 Osaka University @3 JPN @Z 2 aut. @Z 3 aut. @Z 4 aut. @Z 5 aut. @Z 6 aut.
A15 03      @1 Matsushita Electric Industrial Co. Ltd. @3 JPN @Z 7 aut.
A15 04      @1 Okayama University @3 JPN @Z 8 aut.
A18 01  1    @1 International Union for Pure and Applied Physics @3 INT @9 org-cong.
A20       @1 741-742
A21       @1 2007
A23 01      @0 ENG
A43 01      @1 INIST @2 17230 @5 354000159371061800
A44       @0 0000 @1 © 2007 INIST-CNRS. All rights reserved.
A45       @0 8 ref.
A47 01  1    @0 07-0194304
A60       @1 P @2 C
A61       @0 A
A64 01  1    @0 Journal of magnetism and magnetic materials
A66 01      @0 NLD
C01 01    ENG  @0 To elucidate from a microscopic point of view the initial evolution of spin fluctuations in TmTe from the semiconducting state at ambient pressure with an antiferroquadrupole ordering (TQ = 1.8K) to the intermediate-valence metallic state at high pressures P≥2 GPa with a ferromagnetic (FM) ordering (Tc ≃ 14 K), we have carried out 125Te-NMR study at pressures P = 0 and 0.9 GPa. The spin-lattice relaxation rate measurements revealed a pronounced increase of the staggered susceptibility below T≃ 14 K, in addition to the Curie-Weiss-type increase of the uniform susceptibility. Below ∼T*, a wipe-out decrease of the NMR intensity and the finding of an unconventional NMR signal around ∼ 10 MHz that is insensitive to applied field lead to the conclusion that a field-induced short-range FM ordering caused by the competition of FM and antiferromagnetic fluctuations takes place. Pressure of 0.9 GPa hardly affects the anomalous NMR behaviors below T*, leading to speculate that the short-range FM ordering in the semiconducting state shares the origin with the long-range FM ordering at≃ 14K in the high-pressure metallic state.
C02 01  3    @0 001B70E50P
C02 02  3    @0 001B70F60
C02 03  3    @0 001B70E30M
C03 01  3  FRE  @0 Effet pression @5 02
C03 01  3  ENG  @0 Pressure effects @5 02
C03 02  3  FRE  @0 Fluctuation spin @5 03
C03 02  3  ENG  @0 Spin fluctuations @5 03
C03 03  3  FRE  @0 Résonance magnétique nucléaire @5 04
C03 03  3  ENG  @0 Nuclear magnetic resonance @5 04
C03 04  X  FRE  @0 Relation ordre @5 05
C03 04  X  ENG  @0 Ordering @5 05
C03 04  X  SPA  @0 Relación orden @5 05
C03 05  3  FRE  @0 Valence intermédiaire @5 06
C03 05  3  ENG  @0 Intermediate valence @5 06
C03 06  3  FRE  @0 Haute pression @5 07
C03 06  3  ENG  @0 High pressure @5 07
C03 07  3  FRE  @0 Ferromagnétisme @5 08
C03 07  3  ENG  @0 Ferromagnetism @5 08
C03 08  3  FRE  @0 Relaxation spin réseau @5 09
C03 08  3  ENG  @0 Spin-lattice relaxation @5 09
C03 09  3  FRE  @0 Loi Curie Weiss @5 11
C03 09  3  ENG  @0 Curie-Weiss law @5 11
C03 10  3  FRE  @0 Matériau ferromagnétique @5 15
C03 10  3  ENG  @0 Ferromagnetic materials @5 15
C03 11  3  FRE  @0 Thulium tellurure @2 NK @5 16
C03 11  3  ENG  @0 Thulium tellurides @2 NK @5 16
C03 12  3  FRE  @0 Semiconducteur magnétique @5 18
C03 12  3  ENG  @0 Magnetic semiconductors @5 18
C03 13  3  FRE  @0 TmTe @4 INC @5 53
C03 14  3  FRE  @0 7550P @4 INC @5 60
C03 15  3  FRE  @0 7660 @4 INC @5 61
C03 16  3  FRE  @0 7530M @4 INC @5 62
N21       @1 128
pR  
A30 01  1  ENG  @1 ICM 2006 : International Conference on Magnetism @2 17 @3 Kyoto JPN @4 2006-08-20

Format Inist (serveur)

NO : PASCAL 07-0194304 INIST
ET : Pressure effect on the competition between ferromagnetic and antiferromagnetic spin fluctuations in TmTe investigated by 125Te-NMR
AU : YAMAMOTO (A.); WADA (S.); MATSUMURA (T.); HARIMA   (H.); KAWAMURA   (H.); KITAOKA  (Y.); KOHNO   (H.); MIYAKE  (K.); SUZUKI  (Y.); SAKAKIMA  (H.); ZHENG   (G.-q.)
AF : Department of Material Science, Graduate School of Science and Technology, Kobe University/Nada, Kobe 657-8501/Japon (1 aut., 2 aut.); Department of Physics, Graduate School of Science, Tohoku University/Sendai 980-8578/Japon (3 aut.); Kobe University/Japon (1 aut.); Osaka University/Japon (2 aut., 3 aut., 4 aut., 5 aut., 6 aut.); Matsushita Electric Industrial Co. Ltd./Japon (7 aut.); Okayama University/Japon (8 aut.)
DT : Publication en série; Congrès; Niveau analytique
SO : Journal of magnetism and magnetic materials; ISSN 0304-8853; Coden JMMMDC; Pays-Bas; Da. 2007; Vol. 310; No. 2 p. 1; Pp. 741-742; Bibl. 8 ref.
LA : Anglais
EA : To elucidate from a microscopic point of view the initial evolution of spin fluctuations in TmTe from the semiconducting state at ambient pressure with an antiferroquadrupole ordering (TQ = 1.8K) to the intermediate-valence metallic state at high pressures P≥2 GPa with a ferromagnetic (FM) ordering (Tc ≃ 14 K), we have carried out 125Te-NMR study at pressures P = 0 and 0.9 GPa. The spin-lattice relaxation rate measurements revealed a pronounced increase of the staggered susceptibility below T≃ 14 K, in addition to the Curie-Weiss-type increase of the uniform susceptibility. Below ∼T*, a wipe-out decrease of the NMR intensity and the finding of an unconventional NMR signal around ∼ 10 MHz that is insensitive to applied field lead to the conclusion that a field-induced short-range FM ordering caused by the competition of FM and antiferromagnetic fluctuations takes place. Pressure of 0.9 GPa hardly affects the anomalous NMR behaviors below T*, leading to speculate that the short-range FM ordering in the semiconducting state shares the origin with the long-range FM ordering at≃ 14K in the high-pressure metallic state.
CC : 001B70E50P; 001B70F60; 001B70E30M
FD : Effet pression; Fluctuation spin; Résonance magnétique nucléaire; Relation ordre; Valence intermédiaire; Haute pression; Ferromagnétisme; Relaxation spin réseau; Loi Curie Weiss; Matériau ferromagnétique; Thulium tellurure; Semiconducteur magnétique; TmTe; 7550P; 7660; 7530M
ED : Pressure effects; Spin fluctuations; Nuclear magnetic resonance; Ordering; Intermediate valence; High pressure; Ferromagnetism; Spin-lattice relaxation; Curie-Weiss law; Ferromagnetic materials; Thulium tellurides; Magnetic semiconductors
SD : Relación orden
LO : INIST-17230.354000159371061800
ID : 07-0194304

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Pascal:07-0194304

Le document en format XML

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<div type="abstract" xml:lang="en">To elucidate from a microscopic point of view the initial evolution of spin fluctuations in TmTe from the semiconducting state at ambient pressure with an antiferroquadrupole ordering (T
<sub>Q</sub>
= 1.8K) to the intermediate-valence metallic state at high pressures P≥2 GPa with a ferromagnetic (FM) ordering (T
<sub>c</sub>
≃ 14 K), we have carried out
<sup>125</sup>
Te-NMR study at pressures P = 0 and 0.9 GPa. The spin-lattice relaxation rate measurements revealed a pronounced increase of the staggered susceptibility below T≃ 14 K, in addition to the Curie-Weiss-type increase of the uniform susceptibility. Below ∼T
<sup>*</sup>
, a wipe-out decrease of the NMR intensity and the finding of an unconventional NMR signal around ∼ 10 MHz that is insensitive to applied field lead to the conclusion that a field-induced short-range FM ordering caused by the competition of FM and antiferromagnetic fluctuations takes place. Pressure of 0.9 GPa hardly affects the anomalous NMR behaviors below
<sup></sup>
T
<sup>*</sup>
, leading to speculate that the short-range FM ordering in the semiconducting state shares the origin with the long-range FM ordering at≃ 14K in the high-pressure metallic state.</div>
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<s0>To elucidate from a microscopic point of view the initial evolution of spin fluctuations in TmTe from the semiconducting state at ambient pressure with an antiferroquadrupole ordering (T
<sub>Q</sub>
= 1.8K) to the intermediate-valence metallic state at high pressures P≥2 GPa with a ferromagnetic (FM) ordering (T
<sub>c</sub>
≃ 14 K), we have carried out
<sup>125</sup>
Te-NMR study at pressures P = 0 and 0.9 GPa. The spin-lattice relaxation rate measurements revealed a pronounced increase of the staggered susceptibility below T≃ 14 K, in addition to the Curie-Weiss-type increase of the uniform susceptibility. Below ∼T
<sup>*</sup>
, a wipe-out decrease of the NMR intensity and the finding of an unconventional NMR signal around ∼ 10 MHz that is insensitive to applied field lead to the conclusion that a field-induced short-range FM ordering caused by the competition of FM and antiferromagnetic fluctuations takes place. Pressure of 0.9 GPa hardly affects the anomalous NMR behaviors below
<sup></sup>
T
<sup>*</sup>
, leading to speculate that the short-range FM ordering in the semiconducting state shares the origin with the long-range FM ordering at≃ 14K in the high-pressure metallic state.</s0>
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<s5>05</s5>
</fC03>
<fC03 i1="05" i2="3" l="FRE">
<s0>Valence intermédiaire</s0>
<s5>06</s5>
</fC03>
<fC03 i1="05" i2="3" l="ENG">
<s0>Intermediate valence</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="3" l="FRE">
<s0>Haute pression</s0>
<s5>07</s5>
</fC03>
<fC03 i1="06" i2="3" l="ENG">
<s0>High pressure</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="3" l="FRE">
<s0>Ferromagnétisme</s0>
<s5>08</s5>
</fC03>
<fC03 i1="07" i2="3" l="ENG">
<s0>Ferromagnetism</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="3" l="FRE">
<s0>Relaxation spin réseau</s0>
<s5>09</s5>
</fC03>
<fC03 i1="08" i2="3" l="ENG">
<s0>Spin-lattice relaxation</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="3" l="FRE">
<s0>Loi Curie Weiss</s0>
<s5>11</s5>
</fC03>
<fC03 i1="09" i2="3" l="ENG">
<s0>Curie-Weiss law</s0>
<s5>11</s5>
</fC03>
<fC03 i1="10" i2="3" l="FRE">
<s0>Matériau ferromagnétique</s0>
<s5>15</s5>
</fC03>
<fC03 i1="10" i2="3" l="ENG">
<s0>Ferromagnetic materials</s0>
<s5>15</s5>
</fC03>
<fC03 i1="11" i2="3" l="FRE">
<s0>Thulium tellurure</s0>
<s2>NK</s2>
<s5>16</s5>
</fC03>
<fC03 i1="11" i2="3" l="ENG">
<s0>Thulium tellurides</s0>
<s2>NK</s2>
<s5>16</s5>
</fC03>
<fC03 i1="12" i2="3" l="FRE">
<s0>Semiconducteur magnétique</s0>
<s5>18</s5>
</fC03>
<fC03 i1="12" i2="3" l="ENG">
<s0>Magnetic semiconductors</s0>
<s5>18</s5>
</fC03>
<fC03 i1="13" i2="3" l="FRE">
<s0>TmTe</s0>
<s4>INC</s4>
<s5>53</s5>
</fC03>
<fC03 i1="14" i2="3" l="FRE">
<s0>7550P</s0>
<s4>INC</s4>
<s5>60</s5>
</fC03>
<fC03 i1="15" i2="3" l="FRE">
<s0>7660</s0>
<s4>INC</s4>
<s5>61</s5>
</fC03>
<fC03 i1="16" i2="3" l="FRE">
<s0>7530M</s0>
<s4>INC</s4>
<s5>62</s5>
</fC03>
<fN21>
<s1>128</s1>
</fN21>
</pA>
<pR>
<fA30 i1="01" i2="1" l="ENG">
<s1>ICM 2006 : International Conference on Magnetism</s1>
<s2>17</s2>
<s3>Kyoto JPN</s3>
<s4>2006-08-20</s4>
</fA30>
</pR>
</standard>
<server>
<NO>PASCAL 07-0194304 INIST</NO>
<ET>Pressure effect on the competition between ferromagnetic and antiferromagnetic spin fluctuations in TmTe investigated by
<sup>125</sup>
Te-NMR</ET>
<AU>YAMAMOTO (A.); WADA (S.); MATSUMURA (T.); HARIMA   (H.); KAWAMURA   (H.); KITAOKA  (Y.); KOHNO   (H.); MIYAKE  (K.); SUZUKI  (Y.); SAKAKIMA  (H.); ZHENG   (G.-q.)</AU>
<AF>Department of Material Science, Graduate School of Science and Technology, Kobe University/Nada, Kobe 657-8501/Japon (1 aut., 2 aut.); Department of Physics, Graduate School of Science, Tohoku University/Sendai 980-8578/Japon (3 aut.); Kobe University/Japon (1 aut.); Osaka University/Japon (2 aut., 3 aut., 4 aut., 5 aut., 6 aut.); Matsushita Electric Industrial Co. Ltd./Japon (7 aut.); Okayama University/Japon (8 aut.)</AF>
<DT>Publication en série; Congrès; Niveau analytique</DT>
<SO>Journal of magnetism and magnetic materials; ISSN 0304-8853; Coden JMMMDC; Pays-Bas; Da. 2007; Vol. 310; No. 2 p. 1; Pp. 741-742; Bibl. 8 ref.</SO>
<LA>Anglais</LA>
<EA>To elucidate from a microscopic point of view the initial evolution of spin fluctuations in TmTe from the semiconducting state at ambient pressure with an antiferroquadrupole ordering (T
<sub>Q</sub>
= 1.8K) to the intermediate-valence metallic state at high pressures P≥2 GPa with a ferromagnetic (FM) ordering (T
<sub>c</sub>
≃ 14 K), we have carried out
<sup>125</sup>
Te-NMR study at pressures P = 0 and 0.9 GPa. The spin-lattice relaxation rate measurements revealed a pronounced increase of the staggered susceptibility below T≃ 14 K, in addition to the Curie-Weiss-type increase of the uniform susceptibility. Below ∼T
<sup>*</sup>
, a wipe-out decrease of the NMR intensity and the finding of an unconventional NMR signal around ∼ 10 MHz that is insensitive to applied field lead to the conclusion that a field-induced short-range FM ordering caused by the competition of FM and antiferromagnetic fluctuations takes place. Pressure of 0.9 GPa hardly affects the anomalous NMR behaviors below
<sup></sup>
T
<sup>*</sup>
, leading to speculate that the short-range FM ordering in the semiconducting state shares the origin with the long-range FM ordering at≃ 14K in the high-pressure metallic state.</EA>
<CC>001B70E50P; 001B70F60; 001B70E30M</CC>
<FD>Effet pression; Fluctuation spin; Résonance magnétique nucléaire; Relation ordre; Valence intermédiaire; Haute pression; Ferromagnétisme; Relaxation spin réseau; Loi Curie Weiss; Matériau ferromagnétique; Thulium tellurure; Semiconducteur magnétique; TmTe; 7550P; 7660; 7530M</FD>
<ED>Pressure effects; Spin fluctuations; Nuclear magnetic resonance; Ordering; Intermediate valence; High pressure; Ferromagnetism; Spin-lattice relaxation; Curie-Weiss law; Ferromagnetic materials; Thulium tellurides; Magnetic semiconductors</ED>
<SD>Relación orden</SD>
<LO>INIST-17230.354000159371061800</LO>
<ID>07-0194304</ID>
</server>
</inist>
</record>

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